Triangle read by rows, T(n,k) = denominator(binomial(1/2,n-k))*binomial(n+1/2, k+1/2), for n>=0 and 0<=k<=n.
A269950
Triangle read by rows, T(n,k) = denominator(binomial(1/2,n-k))*binomial(n+1/2, k+1/2), for n>=0 and 0<=k<=n.
Terms
- a(0) =1a(1) =3a(2) =1a(3) =15a(4) =5a(5) =1a(6) =35a(7) =35a(8) =7a(9) =1a(10) =315a(11) =105a(12) =63a(13) =9a(14) =1a(15) =693a(16) =1155a(17) =231a(18) =99a(19) =11a(20) =1a(21) =3003a(22) =3003a(23) =3003a(24) =429a(25) =143a(26) =13a(27) =1a(28) =6435a(29) =15015
External references
- oeis: A269950