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Search: id:A091606
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A091606 Column 3 of triangle A091602. +0
1
1, 0, 1, 2, 3, 3, 6, 7, 11, 14, 20, 25, 35, 43, 58, 73, 95, 118, 152, 187, 237, 291, 363, 443, 549, 665, 815, 985, 1197, 1437, 1737, 2075, 2491, 2966, 3539, 4195, 4984, 5882, 6955, 8183, 9633, 11291, 13246, 15474, 18085, 21066, 24536, 28495, 33092, 38321 (list; graph; listen)
OFFSET

3,4

FORMULA

a(n) = A001935(n) - A000726(n).

CROSSREFS

Sequence in context: A022474 A028249 A121833 this_sequence A027037 A020878 A158278

Adjacent sequences: A091603 A091604 A091605 this_sequence A091607 A091608 A091609

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Jan 23 2004

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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