Semi-diagonal (two rows below central terms) of pendular triangle A118345 and equal to the self-convolution cube of the central terms (A118346).

A118348

Semi-diagonal (two rows below central terms) of pendular triangle A118345 and equal to the self-convolution cube of the central terms (A118346).

Terms

    a(0) =1a(1) =3a(2) =18a(3) =121a(4) =873a(5) =6606a(6) =51728a(7) =415629a(8) =3407391a(9) =28388847a(10) =239675406a(11) =2045980440a(12) =17629939980a(13) =153142537440

External references