Number of n X 3 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.
A268623
Number of n X 3 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.
Terms
- a(0) =24a(1) =174a(2) =1086a(3) =6300a(4) =34890a(5) =187224a(6) =982086a(7) =5063964a(8) =25764066a(9) =129678528a(10) =646978302a(11) =3204131172a(12) =15769455258a(13) =77195600520a(14) =376136512950
External references
- oeis: A268623