Table (read by antidiagonals): t(1,n) = t(m,1) = 1 for all m and n. t(m,n) = (sum{k=1 to m-1} t(k,n)) * (sum{k=1 to n-1} t(m,k)).
A124976
Table (read by antidiagonals): t(1,n) = t(m,1) = 1 for all m and n. t(m,n) = (sum{k=1 to m-1} t(k,n)) * (sum{k=1 to n-1} t(m,k)).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =2a(9) =1a(10) =1a(11) =4a(12) =9a(13) =4a(14) =1a(15) =1a(16) =8a(17) =60a(18) =60a(19) =8a(20) =1a(21) =1a(22) =16a(23) =648a(24) =4225a(25) =648a(26) =16a(27) =1a(28) =1a(29) =32
External references
- oeis: A124976