A108337 Positions of the odd terms in A084202, which gives the coefficients b(n) such that (B(x))^2 has coefficients 1 and 2.

0, 1, 3, 5, 6, 13, 15, 16, 18, 25, 26, 28, 30, 31, 63, 65, 66, 68, 75, 76, 80, 82, 83, 85, 86, 87, 88, 90, 92, 96, 97, 99, 100, 101, 107, 108, 110, 113, 114, 115, 117, 118, 120, 121, 122, 130, 131, 132, 136, 137, 139, 141, 143, 144, 145, 147, 149, 150

Offset

0,3

Comments

Also positions of 1's in A108336, which gives the coefficients of b(n) such that (B(x))^2 has coefficients 1 or 2 mod 4.

Equals A108783(n)/2.

Links

Table of n, a(n) for n=0..57.

Crossrefs

Sequence in context: A238961 A238974 A139013 * A285534 A106134 A064519

Adjacent sequences: A108334 A108335 A108336 * A108338 A108339 A108340

Keyword

nonn

Author

N. J. A. Sloane, Jul 02 2005

Extensions

Additional comments from Nadia Heninger, Jul 14 2007

Status

approved