Sequence that except for initial 1 is the complement of its inverse Euler transform.

Terms

a(0) =1a(1) =3a(2) =7a(3) =15a(4) =29a(5) =61a(6) =114a(7) =219a(8) =404a(9) =741a(10) =1324a(11) =2361a(12) =4117a(13) =7141a(14) =12216a(15) =20739a(16) =34821a(17) =58082a(18) =95971a(19) =157564a(20) =256706a(21) =415669a(22) =668588a(23) =1069410a(24) =1700368a(25) =2689649a(26) =4232033a(27) =6627005a(28) =10327609a(29) =16023577