A174134 Nonnegative integers m such that m^2 = (a^2-1)*(b^2+1) for some integers a,b.

0, 4, 20, 24, 60, 116, 120, 136, 140, 260, 340, 360, 444, 676, 696, 700, 816, 1040, 1476, 2020, 2220, 2280, 2684, 3480, 3940, 4056, 4060, 4080, 4420, 4756, 5516, 6100, 6120, 6460, 6780, 8224, 8840, 8976, 9860, 11700, 13756, 16040, 18564, 21340, 22964

Offset

1,2

Comments

m belongs to this sequence iff m^2 belongs to A174133.

All terms are multiples of 4.

Links

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

Crossrefs

Sequence in context: A065984 A039569 A298040 * A032425 A194045 A097251

Adjacent sequences: A174131 A174132 A174133 * A174135 A174136 A174137

Keyword

nonn

Author

Max Alekseyev, Apr 01 2010

Status

approved