Number of n X 2 1..6 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.
A166817
Number of n X 2 1..6 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.
Terms
- a(0) =0a(1) =0a(2) =90a(3) =1552a(4) =9902a(5) =41151a(6) =133175a(7) =364772a(8) =885824a(9) =1962990a(10) =4046548a(11) =7865396a(12) =14558830a(13) =25855557a(14) =44312489a(15) =73628216a(16) =119048688a(17) =187885564a(18) =290170926
External references
- oeis: A166817