1,4

R. K. Guy, O'Beirne's Hexiamond, in The Mathemagician and the Pied Puzzler - A Collection in Tribute to Martin Gardner, Ed. E. R. Berlekamp and T. Rogers, A. K. Peters, 1999, 85-96.

Sequence in context: A116383 A026521 A006534 this_sequence A010364 A110391 A001683

Adjacent sequences: A064032 A064033 A064034 this_sequence A064036 A064037 A064038

dead