Number of nX2 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero.
A304304
Number of nX2 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =2a(1) =8a(2) =23a(3) =65a(4) =192a(5) =569a(6) =1709a(7) =5162a(8) =15663a(9) =47669a(10) =145352a(11) =443789a(12) =1356105a(13) =4146218a(14) =12681419a(15) =38795969a(16) =118706016a(17) =363247697a(18) =1111633973a(19) =3402041162a(20) =10411891095a(21) =31866011357a(22) =97528388600a(23) =298495524005a(24) =913580540913
External references
- oeis: A304304