login
A097270
Numbers that are the difference of two nonzero squares but not the sum of two nonzero squares.
3
3, 7, 9, 11, 12, 15, 16, 19, 21, 23, 24, 27, 28, 31, 33, 35, 36, 39, 43, 44, 47, 48, 49, 51, 55, 56, 57, 59, 60, 63, 64, 67, 69, 71, 75, 76, 77, 79, 81, 83, 84, 87, 88, 91, 92, 93, 95, 96, 99, 103, 105, 107, 108, 111, 112, 115, 119, 120, 121, 123, 124, 127, 129, 131, 132
OFFSET
1,1
COMMENTS
Intersection of A024352 (difference of squares) and complement of A000404 (sum of squares).
LINKS
Eric Weisstein's World of Mathematics, Sum of Squares Function.
CROSSREFS
KEYWORD
nonn
AUTHOR
Ray Chandler, Aug 19 2004
STATUS
approved