Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of one, with rows and columns of the latter in lexicographically nondecreasing order.
A227384
Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of one, with rows and columns of the latter in lexicographically nondecreasing order.
Terms
- a(0) =6a(1) =56a(2) =587a(3) =6160a(4) =61127a(5) =550010a(6) =4450124a(7) =32473856a(8) =215116595a(9) =1303420926a(10) =7278846827a(11) =37731073135a(12) =182726436203a(13) =831526393503
External references
- oeis: A227384