A076437 Square board sizes for which the lights out problem has a unique solution (counting solutions differing only by rotation and reflection as equivalent).

1, 2, 3, 5, 6, 7, 8, 10, 12, 13, 15, 17, 18, 20, 21, 22, 25, 26, 27, 28, 31, 36, 37, 38, 40, 41, 42, 43, 45, 46, 48, 51, 52, 53, 55, 56, 57, 58, 60, 63, 66, 68, 70, 72, 73, 75, 76, 77, 78, 80

Offset: 1

Author

Eric W. Weisstein, Oct 11 2002

Keywords

• nonn
• more

Links

• M. Anderson and T. Feil, Turning Lights Out with Linear Algebra, Mathematics Magazine, 71 (1998), 300-303
• Eric Weisstein's World of Mathematics, Lights Out Puzzle

Crossrefs

Cf. A075463, A076436.

Extensions

More terms from Zhao Hui Du, Mar 29 2014