Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 7 king-move adjacent elements, with upper left element zero.
A304228
Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =32a(1) =13a(2) =16a(3) =46a(4) =89a(5) =306a(6) =1047a(7) =2561a(8) =7117a(9) =22405a(10) =61758a(11) =171188a(12) =506407a(13) =1443870a(14) =4062403a(15) =11720400a(16) =33602232a(17) =95454370a(18) =273283613a(19) =782856603a(20) =2233286246a(21) =6382670544a(22) =18262055338a(23) =52173909746a(24) =149087991997a(25) =426291895548
External references
- oeis: A304228