Number of n X 4 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.
A298217
Number of n X 4 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =29a(2) =40a(3) =120a(4) =503a(5) =1492a(6) =4767a(7) =17127a(8) =56292a(9) =185937a(10) =631054a(11) =2112217a(12) =7064306a(13) =23731748a(14) =79558981a(15) =266764528a(16) =894854496a(17) =3000540755a(18) =10063476031a(19) =33751763853a(20) =113185610212a(21) =379602276002
External references
- oeis: A298217