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A129428 Centered 47-gonal numbers. 0
1, 48, 142, 283, 471, 706, 988, 1317, 1693, 2116, 2586, 3103, 3667, 4278, 4936, 5641, 6393, 7192, 8038, 8931, 9871, 10858, 11892, 12973, 14101, 15276, 16498, 17767, 19083, 20446, 21856, 23313, 24817, 26368, 27966, 29611, 31303, 33042, 34828, 36661, 38541 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

1+(47/2)*n+(47/2)*n^2.

CROSSREFS

Cf. A095311, A130566, A130859, A130876.

Sequence in context: A044680 A118145 A003502 * A039496 A044380 A044761

Adjacent sequences:  A129425 A129426 A129427 * A129429 A129430 A129431

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Oct 06 2007, based on a suggestion from an unknown correspondent in 2004.

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Last modified February 16 10:53 EST 2012. Contains 205904 sequences.