Product of all primes contained as binary substrings in binary representation of n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =2a(5) =10a(6) =6a(7) =63a(8) =2a(9) =2a(10) =20a(11) =330a(12) =6a(13) =390a(14) =126a(15) =1323a(16) =2a(17) =34a(18) =4a(19) =114a(20) =20a(21) =100a(22) =660a(23) =159390a(24) =6a(25) =6a(26) =780a(27) =12870a(28) =126a(29) =237510