Number of sequences with n copies each of 1,2,3,4 and longest increasing subsequence of length 4.

A268840

Number of sequences with n copies each of 1,2,3,4 and longest increasing subsequence of length 4.

Terms

    a(0) =1a(1) =641a(2) =195709a(3) =46922017a(4) =10258694241

External references