A175971 Denominators of 1/16-1/m^2 for some m>0, which are of the form (8*k+4)^2, sorted by increasing m.

16, 16, 144, 400, 144, 784, 1296, 400, 1936, 2704, 784, 3600, 4624, 1296, 5776, 7056, 1936, 8464, 10000, 2704, 11664, 13456, 3600, 15376, 17424, 4624, 19600, 21904, 5776, 24336, 26896, 7056, 29584, 32400, 8464, 35344, 38416, 10000, 41616, 44944, 11664, 48400, 51984, 13456, 55696

Offset

1,1

Comments

A permutation of A174994.

The list of associated m is 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 17, 18, 19, 21, 22, 23, apparently A042968. [R. J. Mathar, Dec 07 2010]

Links

Table of n, a(n) for n=1..45.

Formula

Empirical g.f.: -16*x*(x^8+x^7+9*x^6+22*x^5+6*x^4+22*x^3+9*x^2+x+1) / ((x-1)^3*(x^2+x+1)^3). - Colin Barker, Oct 15 2014

Crossrefs

Sequence in context: A230977 A174683 A174994 * A165837 A361148 A223820

Adjacent sequences: A175968 A175969 A175970 * A175972 A175973 A175974

Keyword

nonn,less

Author

Paul Curtz, Dec 06 2010

Status

approved