T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
A305530
T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =8a(5) =4a(6) =8a(7) =30a(8) =30a(9) =8a(10) =16a(11) =112a(12) =161a(13) =112a(14) =16a(15) =32a(16) =420a(17) =880a(18) =880a(19) =420a(20) =32a(21) =64a(22) =1576a(23) =4779a(24) =7385a(25) =4779a(26) =1576a(27) =64a(28) =128a(29) =5912
External references
- oeis: A305530