Denominator of 2*Sum_{k=0..n} binomial(n,k)^2*binomial(n+k,k)^2*(H(n+k)-H(n-k)) where H(n) = Sum_{k=1..n} 1/k.

A334887

Denominator of 2*Sum_{k=0..n} binomial(n,k)^2*binomial(n+k,k)^2*(H(n+k)-H(n-k)) where H(n) = Sum_{k=1..n} 1/k.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =1a(7) =35a(8) =14a(9) =210a(10) =42a(11) =462a(12) =462a(13) =6006a(14) =858a(15) =4290a(16) =156a(17) =145860a(18) =29172a(19) =2771340a(20) =32604a(21) =554268a(22) =554268a(23) =12748164a(24) =12748164a(25) =318704100a(26) =63740820a(27) =4574700a(28) =191222460a(29) =1459329300

External references