611435

Appears in sequences

• Number of primitive (aperiodic) word structures of length n which contain exactly four different symbols.at n=11A056280
• Number of primitive (aperiodic) palindromic structures using exactly four different symbols.at n=23A056483
• Number of 2 X 2 matrices M with all terms in {1,...,n} and permanent(M) >= n.at n=28A212240