A118142 Numbers n such that a perfect n X n parity pattern exists.

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

Offset

1,1

Comments

See A118141 for definitions and references.

Links

Table of n, a(n) for n=1..48.

Crossrefs

A subsequence of A117870.

Sequence in context: A162698 A166562 A031363 * A193584 A155149 A024821

Adjacent sequences: A118139 A118140 A118141 * A118143 A118144 A118145

Keyword

nonn

Author

Don Knuth, May 11 2006

Status

approved