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A020672 Numbers of form x^2 + 9 y^2. 0
0, 1, 4, 9, 10, 13, 16, 18, 25, 34, 36, 37, 40, 45, 49, 52, 58, 61, 64, 72, 73, 81, 82, 85, 90, 97, 100, 106, 109, 117, 121, 130, 136, 144, 145, 148, 153, 157, 160, 162, 169, 178, 180, 181, 193, 196, 202, 205, 208, 225, 226, 229, 232, 234, 241, 244, 250, 256, 261, 265, 274 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Sequence in context: A086390 A038029 A197039 * A028837 A178241 A028839

Adjacent sequences:  A020669 A020670 A020671 * A020673 A020674 A020675

KEYWORD

easy,nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified February 15 07:58 EST 2012. Contains 205717 sequences.