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Search: id:A097634
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| A097634 |
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Numbers not of form x^2 + 2y^2 + 2yz + 4z^2. |
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+0
2
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| 7, 10, 21, 35, 42, 70, 79, 84, 91, 119, 133, 140, 168, 182, 189, 217, 231, 238, 259, 266, 280, 287, 315, 329, 336, 343, 364, 378, 385, 413, 427, 434, 462, 476, 483, 490, 511, 525, 532, 560, 574, 581, 609, 623, 630, 658, 672, 679, 707, 721, 728, 756, 770, 777
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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t = Union[ Flatten[ Table[ x^2 + 2y^2 + 2y*z + 4z^2, {x, 0, 28}, {y, -23, 23}, {z, -16, 16}]]]; Complement[ Range[ 800], Take[t, 747]] (from Robert G. Wilson v Aug 21 2004)
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CROSSREFS
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Complement of A000398.
Sequence in context: A038211 A122226 A064210 this_sequence A120312 A074377 A117618
Adjacent sequences: A097631 A097632 A097633 this_sequence A097635 A097636 A097637
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KEYWORD
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nonn
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AUTHOR
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Ralf Stephan, Aug 20 2004
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 21 2004
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