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

A182412

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =3a(6) =5a(7) =17a(8) =19a(9) =7a(10) =11a(11) =48a(12) =80a(13) =60a(14) =17a(15) =21a(16) =119a(17) =270a(18) =308a(19) =177a(20) =41a(21) =43a(22) =290a(23) =823a(24) =1256a(25) =1087a(26) =506a(27) =99a(28) =85a(29) =677

External references