Square array A(h,k) = (2^h-1)*A(h,k-1) + Sum_{i=1..h-1} binomial(h,h-i)*2^i*A(i,k-1), with A(1,k) = A(h,1) = 1; read by antidiagonals.
A218695
Square array A(h,k) = (2^h-1)*A(h,k-1) + Sum_{i=1..h-1} binomial(h,h-i)*2^i*A(i,k-1), with A(1,k) = A(h,1) = 1; read by antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =7a(5) =1a(6) =1a(7) =25a(8) =25a(9) =1a(10) =1a(11) =79a(12) =265a(13) =79a(14) =1a(15) =1a(16) =241a(17) =2161a(18) =2161a(19) =241a(20) =1a(21) =1a(22) =727a(23) =16081a(24) =41503a(25) =16081a(26) =727a(27) =1a(28) =1a(29) =2185
External references
- oeis: A218695