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

A172040

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

Terms

    a(0) =1a(1) =0a(2) =2a(3) =0a(4) =2a(5) =4a(6) =0a(7) =6a(8) =8a(9) =8a(10) =0a(11) =22a(12) =28a(13) =24a(14) =16a(15) =0a(16) =90a(17) =112a(18) =96a(19) =64a(20) =32a(21) =0a(22) =394a(23) =484a(24) =416a(25) =288a(26) =160a(27) =64a(28) =0a(29) =1806

External references