I'm sure you've seen some of these numbers before:
1 3 8 13 21 30 36 45 54 63
Whats the next number in the sequence? And what have I done to the Fibonacci sequence?
$\begingroup$
$\endgroup$
5
asked Jan 10, 2018 at 1:39
-
6$\begingroup$ oeis.org/A094110 $\endgroup$– itriedacrabJan 10, 2018 at 1:41
-
1$\begingroup$ @itriedacrab - why aren't you posting that as an answer, seems you've got it? $\endgroup$– PhylypJan 10, 2018 at 1:43
-
3$\begingroup$ @Phylyp I've posted a number sequence question here before, and have since learned my lesson to give those types of questions a wide berth. $\endgroup$– itriedacrabJan 10, 2018 at 1:46
-
1$\begingroup$ @itriedacrab, you're right. This was such a useless sequence, why does OEIS have it :)? Anyway, I should have checked, but forgot. $\endgroup$– Reinis MazeiksJan 10, 2018 at 1:49
-
$\begingroup$ @R.M Did you mean 1,4,8,13,21,30,36,45,54,63 ? $\endgroup$– rhsquaredJan 10, 2018 at 8:28
Add a comment
|
1 Answer
$\begingroup$
$\endgroup$
2
every number is the sum of letters (without spaces) of all the previous numbers.
3 = one (3 letters)
8 = three (5) + one (3)
13 = Eight (5) + three (5) + one (3)
21 = Thirteen (8) + Eight (5) + three (5) + one (3)
30 = twentyOne (9) + 21
36 = Thirty (6) + 30
and so on....
It's still a Fibonacci series of count of letters of n-1th value & number of n-2th value
-
1
-
1$\begingroup$ @RadoslavHristov My understanding is that starting with one is simply a convention. Then, if you write it down, the next number will logically be three. See also the link in the comments. Note that I'd say it makes sense to start with zero instead (since there's nothing before it), but that's just my opinion. $\endgroup$– LolgastJan 10, 2018 at 13:24