Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3 or 8 king-move adjacent elements, with upper left element zero.
A305227
Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =16a(1) =120a(2) =108a(3) =253a(4) =757a(5) =2050a(6) =5958a(7) =17002a(8) =49275a(9) =142734a(10) =414039a(11) =1202260a(12) =3491206a(13) =10141687a(14) =29461836a(15) =85594654a(16) =248682102a(17) =722521492a(18) =2099237868a(19) =6099225999a(20) =17721044395a(21) =51487829975a(22) =149596113978a(23) =434646575675
External references
- oeis: A305227