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A118143
Numbers n for which there exists a perfect n X n parity pattern with 8-fold symmetry.
1
4, 5, 11, 16, 23, 29, 30, 32, 47, 59, 62, 64, 65, 84, 95, 101, 119, 125, 126, 128, 131, 154, 164, 170, 185, 191, 203, 204, 239, 251, 254, 256, 257
OFFSET
1,1
COMMENTS
See A118141 for definitions and references.
If an odd number m appears then so does 2m+1.
CROSSREFS
Cf. A118141.
Sequence in context: A076065 A176115 A066898 * A001350 A077238 A185507
KEYWORD
nonn,more
AUTHOR
Don Knuth, May 11 2006
STATUS
approved