Triangle T(n,k), 0<=k<=n, read by rows given by [1,q-1,q^2,q^3-q,q^4,q^5-q^2,q^6,q^7-q^3,q^8,...] DELTA [ -1,0,-q,0,-q^2,0,-q^3,0,-q^4,0,-q^5,0,...] (for q=2) = [1,1,4,6,16,28,64,...] DELTA [ -1,0,-2,0,-4,0,-8,0,-16,0,...] where DELTA is the operator defined in A084938.
A157963
Triangle T(n,k), 0<=k<=n, read by rows given by [1,q-1,q^2,q^3-q,q^4,q^5-q^2,q^6,q^7-q^3,q^8,...] DELTA [ -1,0,-q,0,-q^2,0,-q^3,0,-q^4,0,-q^5,0,...] (for q=2) = [1,1,4,6,16,28,64,...] DELTA [ -1,0,-2,0,-4,0,-8,0,-16,0,...] where DELTA is the operator defined in A084938.
Terms
- a(0) =1a(1) =1a(2) =-1a(3) =2a(4) =-3a(5) =1a(6) =8a(7) =-14a(8) =7a(9) =-1a(10) =64a(11) =-120a(12) =70a(13) =-15a(14) =1a(15) =1024a(16) =-1984a(17) =1240a(18) =-310a(19) =31a(20) =-1a(21) =32768a(22) =-64512a(23) =41664a(24) =-11160a(25) =1302a(26) =-63a(27) =1a(28) =2097152a(29) =-4161536
External references
- oeis: A157963