A118279 Conjectured number of numbers that are not the sum of three n-gonal numbers, or -1 if infinite.

0, -1, 210, 638, 1348, -1, 5282, 7687, 12453, -1, 24813, -1, 45338, -1, 63702, 84764, 109613, -1, 162687, 155879, 224244, -1, 303049, -1, 353690, -1, 522262, 541796, 651844, -1, 817053

Offset: 3

Author

T. D. Noe, Apr 21 2006

Keywords

• sign

Comments

See A118278 for the conjectured largest number that is not the sum of three n-gonal numbers.

Crossrefs

Cf. A118278-A118285.

Extensions

a(22)-a(33) from Donovan Johnson, Apr 17 2010