Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 or 3 neighboring 1s.
A296392
Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 or 3 neighboring 1s.
Terms
- a(0) =4a(1) =28a(2) =115a(3) =597a(4) =2969a(5) =14502a(6) =72069a(7) =355733a(8) =1758440a(9) =8694133a(10) =42971533a(11) =212421477a(12) =1050032453a(13) =5190462389a(14) =25657338163a(15) =126828250969a(16) =626932433662
External references
- oeis: A296392