Triangle T(n, k, m) = round( Product_{j=0..m} binomial(2*(n+j), 2*(k+j))/binomial( 2*(n-k+j), 2*j) ), where m = 6, read by rows.

A156739

Triangle T(n, k, m) = round( Product_{j=0..m} binomial(2*(n+j), 2*(k+j))/binomial( 2*(n-k+j), 2*j) ), where m = 6, read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =120a(5) =1a(6) =1a(7) =3060a(8) =3060a(9) =1a(10) =1a(11) =38760a(12) =988380a(13) =38760a(14) =1a(15) =1a(16) =319770a(17) =103285710a(18) =103285710a(19) =319770a(20) =1a(21) =1a(22) =1961256a(23) =5226256926a(24) =66199254396a(25) =5226256926a(26) =1961256a(27) =1a(28) =1a(29) =9657700

External references