Triangle T(n,k), read by rows, given by (2,1/2,-1/2,0,0,0,0,0,0,0,...) DELTA (2,-1/2,1/2,0,0,0,0,0,0,0,...) where DELTA is the operator defined in A084938.

A201972

Triangle T(n,k), read by rows, given by (2,1/2,-1/2,0,0,0,0,0,0,0,...) DELTA (2,-1/2,1/2,0,0,0,0,0,0,0,...) where DELTA is the operator defined in A084938.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =5a(4) =8a(5) =3a(6) =12a(7) =28a(8) =20a(9) =4a(10) =29a(11) =88a(12) =94a(13) =40a(14) =5a(15) =70a(16) =262a(17) =372a(18) =244a(19) =70a(20) =6a(21) =169a(22) =752a(23) =1333a(24) =1184a(25) =539a(26) =112a(27) =7a(28) =408a(29) =2104

External references