Square array read by antidiagonals: T(m,n) = H(n,2*m)*(2*m)!/(2*m+2*n-1). H(0,m) = 1/m, for all positive integers m. H(n,m) = Sum_{k=1..m} H(n-1,k).
A136205
Square array read by antidiagonals: T(m,n) = H(n,2*m)*(2*m)!/(2*m+2*n-1). H(0,m) = 1/m, for all positive integers m. H(n,m) = Sum_{k=1..m} H(n-1,k).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =10a(5) =24a(6) =1a(7) =22a(8) =252a(9) =720a(10) =1a(11) =38a(12) =892a(13) =12176a(14) =40320a(15) =1a(16) =58a(17) =2232a(18) =60336a(19) =966240a(20) =3628800a(21) =1a(22) =82a(23) =4632a(24) =199440a(25) =6202080a(26) =114341760a(27) =479001600a(28) =1a(29) =110
External references
- oeis: A136205