Triangle S(n,k) by rows: coefficients of 3^((n-1)/2)*(x^(1/3)*d/dx)^n when n is odd, and of 3^(n/2)*(x^(2/3)*d/dx)^n when n is even.
A223169
Triangle S(n,k) by rows: coefficients of 3^((n-1)/2)*(x^(1/3)*d/dx)^n when n is odd, and of 3^(n/2)*(x^(2/3)*d/dx)^n when n is even.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =4a(4) =3a(5) =4a(6) =24a(7) =9a(8) =28a(9) =42a(10) =9a(11) =28a(12) =252a(13) =189a(14) =27a(15) =280a(16) =630a(17) =270a(18) =27a(19) =280a(20) =3360a(21) =3780a(22) =1080a(23) =81a(24) =3640a(25) =10920a(26) =7020a(27) =1404a(28) =81a(29) =3640
External references
- oeis: A223169