Number of 4 X n 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302214
Number of 4 X n 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =3a(2) =47a(3) =7a(4) =111a(5) =80a(6) =424a(7) =1157a(8) =2922a(9) =12816a(10) =33744a(11) =135689a(12) =427777a(13) =1511455a(14) =5237154a(15) =17740921a(16) =62498339a(17) =212645123a(18) =742064542a(19) =2553096441a(20) =8837428284a(21) =30568037684a(22) =105553660977a(23) =365371090457
External references
- oeis: A302214