Bernardo Recamán Santos's user avatar
Bernardo Recamán Santos's user avatar
Bernardo Recamán Santos's user avatar
Bernardo Recamán Santos
  • Member for 8 years, 2 months
  • Last seen this week
9 votes
4 answers
2k views

This Unusual Year

9 votes
2 answers
883 views

A Christmas Tennis Tournament

9 votes
3 answers
440 views

The Kyiv Triangle Game

9 votes
2 answers
1k views

A Triangle of Squares

9 votes
2 answers
1k views

Factorials whose product is a perfect cube

9 votes
2 answers
551 views

Largest set of factorials whose product is a perfect cube

8 votes
1 answer
221 views

A Knight's Tour

8 votes
2 answers
1k views

Divisibility Graph

8 votes
2 answers
1k views

Four Magic Ellipses

8 votes
3 answers
657 views

A 4 x 4 Magic Square with Pairwise Relatively Prime Entries

8 votes
6 answers
1k views

Restoring order in a deck of playing cards (II)

8 votes
2 answers
2k views

A mystery partition of 100

8 votes
3 answers
1k views

My forgotten PIN

8 votes
1 answer
158 views

Products or sums

8 votes
1 answer
195 views

My Eight Cousins

7 votes
3 answers
1k views

I am thinking of a number

7 votes
2 answers
1k views

Another Rook's Tour of the Chessboard

7 votes
2 answers
950 views

Integers containing all ten digits

7 votes
1 answer
776 views

Largest set of independent hexominoes

7 votes
2 answers
1k views

Seventeen positive integers

7 votes
2 answers
1k views

A partition of 1000 into six parts with least and greatest product possible

7 votes
1 answer
189 views

My Sister's Six Children

7 votes
1 answer
1k views

Six sisters on the ski lift

7 votes
2 answers
3k views

Prime sums in a 4 x 4 board

7 votes
3 answers
1k views

A Gathering of Number-Theorists

7 votes
2 answers
1k views

Father and Son and Grandsons

7 votes
3 answers
1k views

Gaby and Jack's Number Guessing Game

7 votes
2 answers
1k views

Primes and Squares

7 votes
2 answers
664 views

Numbered Billiard Balls

7 votes
3 answers
978 views

Avoiding arithmetic progressions in square grids

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