Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + ((n+1)*(n+2)*(2*n+3)*(3*n^2+9*n+5)/30)*T(n-2, k-1), read by rows.
A154230
Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + ((n+1)*(n+2)*(2*n+3)*(3*n^2+9*n+5)/30)*T(n-2, k-1), read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =100a(5) =1a(6) =1a(7) =455a(8) =455a(9) =1a(10) =1a(11) =1435a(12) =98810a(13) =1435a(14) =1a(15) =1a(16) =3711a(17) =1135370a(18) =1135370a(19) =3711a(20) =1a(21) =1a(22) =8388a(23) =7849141a(24) =464306300a(25) =7849141a(26) =8388a(27) =1a(28) =1a(29) =17161
External references
- oeis: A154230