Square array T(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of 1/(1 - 9*x*(1 - x)^k)^(1/3).
A361840
Square array T(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of 1/(1 - 9*x*(1 - x)^k)^(1/3).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =3a(5) =18a(6) =1a(7) =3a(8) =15a(9) =126a(10) =1a(11) =3a(12) =12a(13) =90a(14) =945a(15) =1a(16) =3a(17) =9a(18) =57a(19) =585a(20) =7371a(21) =1a(22) =3a(23) =6a(24) =27a(25) =297a(26) =3969a(27) =58968a(28) =1a(29) =3
External references
- oeis: A361840