Number of 3 X n 0..2 arrays with no element equal to any value at offset (-1,-2) (0,-1) or (-1,0) and new values introduced in order 0..2.
A274750
Number of 3 X n 0..2 arrays with no element equal to any value at offset (-1,-2) (0,-1) or (-1,0) and new values introduced in order 0..2.
Terms
- a(0) =2a(1) =9a(2) =34a(3) =133a(4) =518a(5) =2017a(6) =7858a(7) =30605a(8) =119214a(9) =464345a(10) =1808682a(11) =7044997a(12) =27441030a(13) =106885713a(14) =416331266a(15) =1621654589a(16) =6316517406a(17) =24603508041a(18) =95833284570a(19) =373280851061
External references
- oeis: A274750