A025377 Numbers that are the sum of 4 distinct nonzero squares in exactly 2 ways.

90, 94, 95, 99, 105, 111, 119, 123, 129, 134, 138, 141, 143, 146, 151, 153, 154, 155, 166, 167, 169, 179, 185, 193, 197, 199, 203, 209, 213, 217, 227, 241, 251, 253, 257, 269, 276, 283, 293, 307, 308, 313, 356, 360, 376, 536, 552, 584, 616, 664, 1104, 1232, 1424, 1440

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Index entries for sequences related to sums of squares

Formula

{n: A025443(n) = 2}. - R. J. Mathar, Jun 15 2018

Crossrefs

Cf. A025386.

Sequence in context: A003899 A271233 A050652 * A257445 A138692 A057455

Adjacent sequences: A025374 A025375 A025376 * A025378 A025379 A025380

Keyword

nonn

Author

David W. Wilson

Status

approved