Square array read by antidiagonals: S(p,q) = (p+q+1)!(2p+2q+1)!/((p+1)!(2p+1)!(q+1)!(2q+1)!) (p,q>=0).
A111910
Square array read by antidiagonals: S(p,q) = (p+q+1)!(2p+2q+1)!/((p+1)!(2p+1)!(q+1)!(2q+1)!) (p,q>=0).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =1a(7) =14a(8) =14a(9) =1a(10) =1a(11) =30a(12) =84a(13) =30a(14) =1a(15) =1a(16) =55a(17) =330a(18) =330a(19) =55a(20) =1a(21) =1a(22) =91a(23) =1001a(24) =2145a(25) =1001a(26) =91a(27) =1a(28) =1a(29) =140
External references
- oeis: A111910