A118283 Conjectured number of numbers that are not the sum of three generalized n-gonal numbers, or -1 if infinite.

0, -1, 0, 0, 4, -1, 26, 45, 94, -1, 196, -1, 370, -1, 641, 743, 999, -1, 1537, 1429, 2619

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: A135897 A039816 A329060 * A095891 A367304 A095887

Adjacent sequences: A118280 A118281 A118282 * A118284 A118285 A118286

Keyword

sign

Author

T. D. Noe, Apr 21 2006

Status

approved