Triangle T(m,n) read by rows: T(m,n) = Sum_{k=1..n} StirlingS2(m, n) * StirlingS2(m, k).

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =12a(5) =5a(6) =1a(7) =56a(8) =84a(9) =15a(10) =1a(11) =240a(12) =1025a(13) =510a(14) =52a(15) =1a(16) =992a(17) =10980a(18) =12155a(19) =3030a(20) =203a(21) =1a(22) =4032a(23) =109865a(24) =250250a(25) =119700a(26) =18396a(27) =877a(28) =1a(29) =16256