42355950

Appears in sequences

• Stirling numbers of the second kind, S(n,4).at n=11A000453
• Stirling numbers of second kind S2(15,n).at n=3A011564
• Number of palindromic structures using exactly four different symbols.at n=28A056473
• Number of palindromic structures using exactly four different symbols.at n=29A056473
• Number of primitive (aperiodic) palindromic structures using exactly four different symbols.at n=28A056483
• Number of periodic palindromic structures of length n using exactly four different symbols.at n=28A056510
• Number of primitive (period n) periodic palindromic structures using exactly four different symbols.at n=28A056521
• Even numbers in the triangle of Stirling numbers of the second kind (A008277).at n=36A348650