A158519 The larger member a of a pair of integers a>=b such that sqrt((a+b+2)^4+4ab) and sqrt((a+b+3)^4+8ab) are simultaneously integers.

14, 51, 54, 99, 132, 143, 160, 224, 260, 299, 344, 407, 440, 450, 527, 531, 539, 615, 666, 714, 1025, 1064, 1104, 1196, 1287, 1295, 1420, 1512, 2013, 2024, 2024, 2070, 2133, 2184, 2484, 2716, 2750, 3024, 3311, 3375, 3401, 3564, 4047, 4224, 4514, 4524

Offset

1,1

Comments

Entries are repeated if there is more than one matching b.

Links

Table of n, a(n) for n=1..46.

Lorenz Halbeisen, Fans and bundles in the graph of pairwise sums and products, El. J. Comb. 11 (2004) #R6.

Crossrefs

Sequence in context: A082668 A231044 A231076 * A043132 A039309 A043912

Adjacent sequences: A158516 A158517 A158518 * A158520 A158521 A158522

Keyword

nonn

Author

R. J. Mathar, Mar 20 2009

Status

approved