Convolution of A000108 (Catalan numbers) with A126120 (Catalan numbers interpolated with 0's).

A161006

Convolution of A000108 (Catalan numbers) with A126120 (Catalan numbers interpolated with 0's).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =6a(4) =18a(5) =49a(6) =155a(7) =486a(8) =1614a(9) =5414a(10) =18630a(11) =64828a(12) =228740a(13) =814485a(14) =2926323a(15) =10588486a(16) =38561814a(17) =141214570a(18) =519711666a(19) =1921126036a(20) =7129756188a(21) =26555090618a(22) =99228108222a(23) =371886366620

External references