Binomial triangle based on factorials.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =5a(6) =6a(7) =8a(8) =11a(9) =16a(10) =24a(11) =30a(12) =38a(13) =49a(14) =65a(15) =120a(16) =144a(17) =174a(18) =212a(19) =261a(20) =326a(21) =720a(22) =840a(23) =984a(24) =1158a(25) =1370a(26) =1631a(27) =1957a(28) =5040a(29) =5760