Triangle of the coefficients of Touchard's chord enumerating polynomials, [x^k] S(n,x), 0 <= k <= n*(n-1)/2.
A322398
Triangle of the coefficients of Touchard's chord enumerating polynomials, [x^k] S(n,x), 0 <= k <= n*(n-1)/2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =3a(6) =1a(7) =5a(8) =15a(9) =21a(10) =18a(11) =10a(12) =4a(13) =1a(14) =14a(15) =56a(16) =112a(17) =148a(18) =143a(19) =109a(20) =68a(21) =35a(22) =15a(23) =5a(24) =1a(25) =42a(26) =210a(27) =540a(28) =945a(29) =1255
External references
- oeis: A322398