Triangle T(n, k) read by rows: T(n, k) = 2^n*binomial(2*n + 1, 2*k + 1) * Pochhammer(1/2, n - k) * Pochhammer(1/2, k).

A380281

Triangle T(n, k) read by rows: T(n, k) = 2^n*binomial(2*n + 1, 2*k + 1) * Pochhammer(1/2, n - k) * Pochhammer(1/2, k).

Terms

    a(0) =1a(1) =3a(2) =1a(3) =15a(4) =10a(5) =3a(6) =105a(7) =105a(8) =63a(9) =15a(10) =945a(11) =1260a(12) =1134a(13) =540a(14) =105a(15) =10395a(16) =17325a(17) =20790a(18) =14850a(19) =5775a(20) =945a(21) =135135a(22) =270270a(23) =405405a(24) =386100a(25) =225225a(26) =73710a(27) =10395a(28) =2027025a(29) =4729725

External references