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Search: id:A027131
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A027131 a(n) = diagonal sum of left justified array T given by A027113. +0
1
1, 1, 2, 4, 4, 8, 11, 15, 24, 35, 48, 75, 108, 152, 232, 336, 477, 721, 1046, 1496, 2245, 3264, 4690, 7006, 10200, 14709, 21897, 31916, 46148, 68523, 99962 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A125204 A073420 A034408 this_sequence A055946 A130124 A076342

Adjacent sequences: A027128 A027129 A027130 this_sequence A027132 A027133 A027134

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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