List of pairs (a(n),b(n)): f(n) = A004001(n); a(n) = f(n) + a(n-1); b(n) = f(n)*b(n-1).

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =4a(7) =2a(8) =6a(9) =4a(10) =9a(11) =12a(12) =13a(13) =48a(14) =17a(15) =192a(16) =21a(17) =768a(18) =26a(19) =3840a(20) =32a(21) =23040a(22) =39a(23) =161280a(24) =46a(25) =1128960a(26) =54a(27) =9031680a(28) =62a(29) =72253440