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A118283 Conjectured number of numbers that are not the sum of three generalized n-gonal numbers, or -1 if infinite. 2
0, -1, 0, 0, 4, -1, 26, 45, 94, -1, 196, -1, 370, -1, 641, 743, 999, -1, 1537, 1429, 2619 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,5

COMMENTS

See A118282 for the conjectured largest number that is not the sum of three generalized n-gonal numbers. For n=7, only four numbers are not representable: 10, 16, 76 and 307.

LINKS

Table of n, a(n) for n=3..23.

CROSSREFS

Cf. A118278-A118285.

Sequence in context: A196528 A135897 A039816 * A095891 A095887 A225213

Adjacent sequences:  A118280 A118281 A118282 * A118284 A118285 A118286

KEYWORD

sign

AUTHOR

T. D. Noe, Apr 21 2006

STATUS

approved

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Last modified December 21 06:19 EST 2014. Contains 252297 sequences.