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Search: id:A118142
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A118142 Numbers n such that a perfect n X n parity pattern exists. +0
2
4, 5, 9, 11, 16, 19, 23, 29, 30, 32, 33, 39, 47, 59, 61, 62, 64, 65, 67, 79, 84, 95, 101, 119, 123, 125, 126, 128, 129, 131, 135, 154, 159, 164, 169, 170, 185, 191, 203, 204, 239, 247, 251, 253, 254, 256, 257, 259 (list; graph; listen)
OFFSET

1,1

COMMENT

See A118141 for definitions and references.

CROSSREFS

A subsequence of A117870.

Sequence in context: A134921 A117870 A031363 this_sequence A024821 A059610 A047610

Adjacent sequences: A118139 A118140 A118141 this_sequence A118143 A118144 A118145

KEYWORD

nonn

AUTHOR

D. E. Knuth, May 11 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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