Convolution of A000108(n+1), n >= 0, (Catalan numbers) with A038845 (3-fold convolution of powers of 4).
A041001
Convolution of A000108(n+1), n >= 0, (Catalan numbers) with A038845 (3-fold convolution of powers of 4).
Terms
- a(0) =1a(1) =14a(2) =125a(3) =906a(4) =5810a(5) =34364a(6) =191901a(7) =1026610a(8) =5312230a(9) =26767940a(10) =131990066a(11) =639210404a(12) =3048892740a(13) =14354652152a(14) =66828135005a(15) =308078809794
External references
- oeis: A041001