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A106264 Diagonal sums of number triangle A106262. 1
1, 0, 1, 2, 2, 4, 2, 4, 6, 7, 7, 8, 14, 10, 13, 12, 15, 19, 22, 22, 23, 25, 25, 44, 44, 40, 28, 50, 44, 54, 52, 55, 50, 66, 53, 72, 83, 80, 58, 73, 82, 110, 114, 123, 127, 113, 91, 112, 158, 137, 117, 122, 152, 135, 166, 160, 211, 206, 171, 219, 240, 201, 188, 194, 236 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..64.

FORMULA

a(n)=sum{k=0..floor(n/2), (2^(n-2k) mod k+2)}

CROSSREFS

Sequence in context: A306743 A140821 A063789 * A278535 A152423 A233765

Adjacent sequences:  A106261 A106262 A106263 * A106265 A106266 A106267

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 28 2005

STATUS

approved

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Last modified October 21 17:28 EDT 2021. Contains 348155 sequences. (Running on oeis4.)