Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
A300309
Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =13a(2) =20a(3) =45a(4) =148a(5) =529a(6) =1747a(7) =5797a(8) =19584a(9) =66222a(10) =223320a(11) =753486a(12) =2543959a(13) =8589093a(14) =28995289a(15) =97886648a(16) =330471005a(17) =1115681398a(18) =3766562359a(19) =12716019134a(20) =42929679141a(21) =144931880115a(22) =489294288989
External references
- oeis: A300309