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Search: id:A079422
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| A079422 |
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a(n) = number of 1's in the first n^2 Spiro-Fibonacci differences. |
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+0
3
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| 0, 3, 7, 11, 15, 19, 24, 26, 32, 41, 49, 55, 61, 67, 75, 78, 83, 111, 119, 135
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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N. Fernandez, Graphical representations of some Spiro-Fibonacci sequences
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EXAMPLE
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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.
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CROSSREFS
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Cf. A063826, A078510, A079421.
Sequence in context: A004767 A118894 A039957 this_sequence A022797 A109507 A022800
Adjacent sequences: A079419 A079420 A079421 this_sequence A079423 A079424 A079425
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KEYWORD
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nonn
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AUTHOR
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N. Fernandez (primeness(AT)borve.org), Jan 07 2003
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