Triangle T(n, k) = (n/2)*binomial(n-1, k-1)*binomial(n-1, k) with T(n, 0) = T(n, n) = 1, read by rows.
A174116
Triangle T(n, k) = (n/2)*binomial(n-1, k-1)*binomial(n-1, k) with T(n, 0) = T(n, n) = 1, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =6a(12) =18a(13) =6a(14) =1a(15) =1a(16) =10a(17) =60a(18) =60a(19) =10a(20) =1a(21) =1a(22) =15a(23) =150a(24) =300a(25) =150a(26) =15a(27) =1a(28) =1a(29) =21
External references
- oeis: A174116