A118426 Values of n such that no solutions (x, y, z) to n = x^2 + (2y)^2 + z(z+1)/2 are zerofree.

1, 2, 3, 4, 7, 10, 12, 22, 24

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Square-Triangle Theorem

Crossrefs

Cf. A118421, A118422, A118423.

Sequence in context: A104519 A321684 A117220 * A082008 A105330 A097545

Adjacent sequences: A118423 A118424 A118425 * A118427 A118428 A118429

Keyword

nonn,fini,more

Author

Eric W. Weisstein, Apr 27 2006

Status

approved