Triangle T(n, k, q) = binomial(n, k) + q^n*binomial(n-2, k-1) - 1 with T(n, 0) = T(n, n) = 1 and q = 3, read by rows.
A173047
Triangle T(n, k, q) = binomial(n, k) + q^n*binomial(n-2, k-1) - 1 with T(n, 0) = T(n, n) = 1 and q = 3, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =10a(5) =1a(6) =1a(7) =29a(8) =29a(9) =1a(10) =1a(11) =84a(12) =167a(13) =84a(14) =1a(15) =1a(16) =247a(17) =738a(18) =738a(19) =247a(20) =1a(21) =1a(22) =734a(23) =2930a(24) =4393a(25) =2930a(26) =734a(27) =1a(28) =1a(29) =2193
External references
- oeis: A173047