login
A079422
a(n) = number of 1's in the first n^2 Spiro-Fibonacci differences.
2
0, 3, 7, 11, 15, 19, 24, 26, 32, 41, 49, 55, 61, 67, 75, 78, 83, 111, 119, 135
OFFSET
1,2
EXAMPLE
The Spiro-Fibonacci 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
KEYWORD
nonn
AUTHOR
Neil Fernandez, Jan 07 2003
STATUS
approved