Triangle, read by rows, T(n,k,q) = c(k,q) + c(n-k,q) - c(n, q) where c(n,q) = Product_{j=1..n-1} ((q^(j+1) - 1)/(q-1)) and q = 2.
A172091
Triangle, read by rows, T(n,k,q) = c(k,q) + c(n-k,q) - c(n, q) where c(n,q) = Product_{j=1..n-1} ((q^(j+1) - 1)/(q-1)) and q = 2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-1a(5) =1a(6) =1a(7) =-17a(8) =-17a(9) =1a(10) =1a(11) =-293a(12) =-309a(13) =-293a(14) =1a(15) =1a(16) =-9449a(17) =-9741a(18) =-9741a(19) =-9449a(20) =1a(21) =1a(22) =-605429a(23) =-614877a(24) =-615153a(25) =-614877a(26) =-605429a(27) =1a(28) =1a(29) =-77514569
External references
- oeis: A172091