Triangle, read by rows, where T(n,k) = C( k*(k+1)/2 + n-k + 1, n-k) for n>=k>=0.

A122176

Triangle, read by rows, where T(n,k) = C( k*(k+1)/2 + n-k + 1, n-k) for n>=k>=0.

Terms

    a(0) =1a(1) =2a(2) =1a(3) =3a(4) =3a(5) =1a(6) =4a(7) =6a(8) =5a(9) =1a(10) =5a(11) =10a(12) =15a(13) =8a(14) =1a(15) =6a(16) =15a(17) =35a(18) =36a(19) =12a(20) =1a(21) =7a(22) =21a(23) =70a(24) =120a(25) =78a(26) =17a(27) =1a(28) =8a(29) =28

External references