Triangle read by rows: T(n,k) (0<=k<=floor(n/2)) is the number of Delannoy paths of length n, having k ED's.

A110221

Triangle read by rows: T(n,k) (0<=k<=floor(n/2)) is the number of Delannoy paths of length n, having k ED's.

Terms

    a(0) =1a(1) =3a(2) =11a(3) =2a(4) =45a(5) =18a(6) =195a(7) =120a(8) =6a(9) =873a(10) =720a(11) =90a(12) =3989a(13) =4110a(14) =870a(15) =20a(16) =18483a(17) =22806a(18) =6930a(19) =420a(20) =86515a(21) =124264a(22) =49560a(23) =5320a(24) =70a(25) =408105a(26) =668520a(27) =331128a(28) =52920a(29) =1890

External references