A147779 Squarefree positive integers of the form u*v*(u^2-v^2) for some integer u,v.

6, 30, 210, 330, 546, 2310, 2730, 3570, 4290, 5610, 6090, 6630, 7854, 8970, 9690, 10374, 10626, 13566, 18354, 19866, 22134, 25806, 26970, 39270, 43890, 51330, 51414, 52026, 54834, 56730, 59334, 66990, 68034, 71610, 72930, 74046, 75174

Offset

1,1

Links

Table of n, a(n) for n=1..37.

Formula

Squarefree terms of A147778. Squarefree terms of A073120. Squarefree terms of A009112.

Terms of A006991 (primitive congruent numbers) corresponding to right triangles with integer sides.

Crossrefs

Cf. A003273, A006991, A009112, A073120, A147778.

Sequence in context: A369959 A057896 A336509 * A054721 A074111 A231209

Adjacent sequences: A147776 A147777 A147778 * A147780 A147781 A147782

Keyword

nonn

Author

Max Alekseyev, Nov 12 2008

Status

approved