Triangle T(n,k), read by rows, given by (2,0,3,0,4,0,5,0,6,0,7,0,8,0,9,...) DELTA (2,1,3,2,4,3,5,4,6,5,7,6,8,7,9,...) where DELTA is the operator defined in A084938.

A199400

Triangle T(n,k), read by rows, given by (2,0,3,0,4,0,5,0,6,0,7,0,8,0,9,...) DELTA (2,1,3,2,4,3,5,4,6,5,7,6,8,7,9,...) where DELTA is the operator defined in A084938.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =4a(4) =10a(5) =6a(6) =8a(7) =38a(8) =54a(9) =24a(10) =16a(11) =130a(12) =330a(13) =336a(14) =120a(15) =32a(16) =422a(17) =1710a(18) =3000a(19) =2400a(20) =720a(21) =64a(22) =1330a(23) =8106a(24) =21840a(25) =29400a(26) =19440a(27) =5040a(28) =128a(29) =4118

External references