Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
A305906
Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =14a(2) =35a(3) =98a(4) =358a(5) =1124a(6) =3534a(7) =11667a(8) =37816a(9) =121881a(10) =396149a(11) =1286340a(12) =4168472a(13) =13525005a(14) =43893856a(15) =142389105a(16) =461961170a(17) =1498926869a(18) =4863215164a(19) =15778543522a(20) =51194303437a(21) =166101128424a(22) =538917021528
External references
- oeis: A305906