Triangle T(n,k), n >= 0, 0 <= k <= n, read by rows, where T(n,k) = 2^(n-k) * T(n-1,k-1) + 3^k * T(n-1,k) with T(n,k) = n^k if n*k=0.
A383753
Triangle T(n,k), n >= 0, 0 <= k <= n, read by rows, where T(n,k) = 2^(n-k) * T(n-1,k-1) + 3^k * T(n-1,k) with T(n,k) = n^k if n*k=0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =1a(7) =19a(8) =19a(9) =1a(10) =1a(11) =65a(12) =247a(13) =65a(14) =1a(15) =1a(16) =211a(17) =2743a(18) =2743a(19) =211a(20) =1a(21) =1a(22) =665a(23) =28063a(24) =96005a(25) =28063a(26) =665a(27) =1a(28) =1a(29) =2059
External references
- oeis: A383753