

A079422


a(n) = number of 1's in the first n^2 SpiroFibonacci differences.


2



0, 3, 7, 11, 15, 19, 24, 26, 32, 41, 49, 55, 61, 67, 75, 78, 83, 111, 119, 135
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..20.
N. Fernandez, Graphical representations of some SpiroFibonacci sequences


EXAMPLE

The SpiroFibonacci differences are 0,1,1,1,1,1,1,1,0,1,0,1,0,1,0,1,...(A079421). Terms are written in square boxes radiating spirally. a(n) = the sum of the first n^2 terms in A079421, i.e. the number of 1's in a spiral of height n and width n.


CROSSREFS

Cf. A063826, A078510, A079421.
Sequence in context: A330213 A039957 A217332 * A310210 A292657 A277675
Adjacent sequences: A079419 A079420 A079421 * A079423 A079424 A079425


KEYWORD

nonn


AUTHOR

Neil Fernandez, Jan 07 2003


STATUS

approved



