Number of n X 6 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A299593
Number of n X 6 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =13a(1) =15a(2) =35a(3) =121a(4) =256a(5) =576a(6) =1225a(7) =2601a(8) =5625a(9) =12100a(10) =25921a(11) =55696a(12) =119716a(13) =257049a(14) =552049a(15) =1185921a(16) =2547216a(17) =5470921a(18) =11751184a(19) =25240576a(20) =54213769a(21) =116445681a(22) =250114225a(23) =537219684a(24) =1153892961a(25) =2478446656a(26) =5323453444a(27) =11434238761
External references
- oeis: A299593