A higher order recursion triangle sequence: m=4;l=4;e(n,k,m)=(l*k + m - 1)e(n - 1, k, m) + (m*n - l*k + 1 - m)e(n - 1, k - 1, m).
A156280
A higher order recursion triangle sequence: m=4;l=4;e(n,k,m)=(l*k + m - 1)e(n - 1, k, m) + (m*n - l*k + 1 - m)e(n - 1, k - 1, m).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =12a(5) =1a(6) =1a(7) =93a(8) =71a(9) =1a(10) =1a(11) =664a(12) =1618a(13) =370a(14) =1a(15) =1a(16) =4665a(17) =26430a(18) =20112a(19) =1869a(20) =1a(21) =1a(22) =32676a(23) =370035a(24) =645270a(25) =216519a(26) =9368a(27) =1a(28) =1a(29) =228757
External references
- oeis: A156280