A factorial-like triangle read by rows: T(0,0) = 1; T(n+1,0) = T(n,0)+1; T(n+1,k+1) = T(n,0)*T(n,k), k=0..n.

A245334

A factorial-like triangle read by rows: T(0,0) = 1; T(n+1,0) = T(n,0)+1; T(n+1,k+1) = T(n,0)*T(n,k), k=0..n.

Terms

    a(0) =1a(1) =2a(2) =1a(3) =3a(4) =4a(5) =2a(6) =4a(7) =9a(8) =12a(9) =6a(10) =5a(11) =16a(12) =36a(13) =48a(14) =24a(15) =6a(16) =25a(17) =80a(18) =180a(19) =240a(20) =120a(21) =7a(22) =36a(23) =150a(24) =480a(25) =1080a(26) =1440a(27) =720a(28) =8a(29) =49

External references