Exponential transform of Pascal's triangle A007318.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =2a(6) =5a(7) =15a(8) =15a(9) =5a(10) =15a(11) =60a(12) =90a(13) =60a(14) =15a(15) =52a(16) =260a(17) =520a(18) =520a(19) =260a(20) =52a(21) =203a(22) =1218a(23) =3045a(24) =4060a(25) =3045a(26) =1218a(27) =203a(28) =877a(29) =6139