A sum with next-to-central binomial coefficients of even order, Catalan related.

A029760

A sum with next-to-central binomial coefficients of even order, Catalan related.

Terms

    a(0) =1a(1) =8a(2) =47a(3) =244a(4) =1186a(5) =5536a(6) =25147a(7) =112028a(8) =491870a(9) =2135440a(10) =9188406a(11) =39249768a(12) =166656772a(13) =704069248a(14) =2961699667a(15) =12412521388a(16) =51854046982a(17) =216013684528a(18) =897632738722

External references