Trinomial transform of central binomial coefficients A001405.

A103769

Trinomial transform of central binomial coefficients A001405.

Terms

    a(0) =1a(1) =4a(2) =21a(3) =123a(4) =757a(5) =4788a(6) =30817a(7) =200784a(8) =1320093a(9) =8740284a(10) =58193673a(11) =389233287a(12) =2613338091a(13) =17602627006a(14) =118892784555a(15) =804951501469

External references