Triangle T(n,k), k>=0 and n>=1, read by rows defined by: T(n,k) = (2k+3)*binomial(2n,n-k-1)/(n+k+2).
A050155
Triangle T(n,k), k>=0 and n>=1, read by rows defined by: T(n,k) = (2k+3)*binomial(2n,n-k-1)/(n+k+2).
Terms
- a(0) =1a(1) =3a(2) =1a(3) =9a(4) =5a(5) =1a(6) =28a(7) =20a(8) =7a(9) =1a(10) =90a(11) =75a(12) =35a(13) =9a(14) =1a(15) =297a(16) =275a(17) =154a(18) =54a(19) =11a(20) =1a(21) =1001a(22) =1001a(23) =637a(24) =273a(25) =77a(26) =13a(27) =1a(28) =3432a(29) =3640
External references
- oeis: A050155