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A023545 Convolution of natural numbers >= 2 and natural numbers >= 3. +0
1
6, 17, 34, 58, 90, 131, 182, 244, 318, 405, 506, 622, 754, 903, 1070, 1256, 1462, 1689, 1938, 2210, 2506, 2827, 3174, 3548, 3950, 4381, 4842, 5334, 5858, 6415, 7006, 7632, 8294, 8993, 9730, 10506, 11322, 12179, 13078, 14020, 15006, 16037 (list; graph; listen)
OFFSET

1,1

FORMULA

n*(n^2 + 12*n + 23)/6. - Ralf Stephan, Feb 15 2004; corrected by Lucas Sidiropoulos (lsid77(AT)yahoo.com), Jun 23 2008

CROSSREFS

Sequence in context: A038795 A066486 A056109 this_sequence A038633 A083045 A012277

Adjacent sequences: A023542 A023543 A023544 this_sequence A023546 A023547 A023548

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 15 00:42 EST 2009. Contains 170824 sequences.


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