A223708 Nonzero terms in A107628; related to quadratic forms ax^2 + bxy + cy^2.

1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 1, 2, 2, 2, 2, 3, 2, 1, 2, 3, 2, 2, 2, 3, 3, 2, 2, 3, 2, 1, 3, 4, 2, 2, 2, 3, 3, 2, 4, 4, 2, 2, 2, 5, 4, 2, 2, 3, 4, 2, 2, 5, 2, 2, 4, 6, 4, 2, 2, 3, 3, 3, 4, 4, 3, 2, 4, 6, 3, 2, 2, 4, 4, 3, 3, 6, 4, 1, 5, 6, 4, 3, 2, 4

Offset

1,7

Links

T. D. Noe, Table of n, a(n) for n = 1..5000

Crossrefs

Cf. A107628.

Sequence in context: A218541 A213911 A081355 * A060778 A096492 A343856

Adjacent sequences: A223705 A223706 A223707 * A223709 A223710 A223711

Keyword

nonn

Author

T. D. Noe, Apr 09 2013

Status

approved