Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order.
A227262
Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order.
Terms
- a(0) =6a(1) =96a(2) =1111a(3) =11932a(4) =112349a(5) =937865a(6) =6961606a(7) =46364258a(8) =280471755a(9) =1557597103a(10) =8014162577a(11) =38505244717a(12) =173924889597a(13) =742804988619
External references
- oeis: A227262