A177348 Subset of A174525 not of the form a*a + b*b - 1.

134, 254, 326, 365, 491, 554, 581, 599, 731, 782, 794, 815, 818, 821, 869, 875, 914, 941, 951, 974, 1021, 1046, 1106, 1166, 1189, 1210, 1211, 1442, 1483, 1526, 1541, 1559, 1646, 1706, 1730, 1739, 1787, 1814, 1877, 1882, 1886, 1954, 1966, 1990, 2014

Offset

1,1

Links

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

Example

For 134, 135 is not the sum of two squares. However, 102*134 + 21 and 21*134 + 102 are both squares, so 134 belongs to this sequence.

Crossrefs

Subset of A174525.

Sequence in context: A020353 A050963 A051387 * A275997 A370162 A007251

Adjacent sequences: A177345 A177346 A177347 * A177349 A177350 A177351

Keyword

base,easy,nonn

Author

Michael Peake (michael.peake(AT)bigpond.com.au), May 07 2010

Extensions

Minor edits by Franklin T. Adams-Watters, May 12 2014

Status

approved