Number of n X 1 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once.
A269760
Number of n X 1 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once.
Terms
- a(0) =0a(1) =6a(2) =60a(3) =450a(4) =3000a(5) =18750a(6) =112500a(7) =656250a(8) =3750000a(9) =21093750a(10) =117187500a(11) =644531250a(12) =3515625000a(13) =19042968750a(14) =102539062500a(15) =549316406250
External references
- oeis: A269760