Sequence A037093 shown in octal.

Terms

a(0) =0a(1) =1a(2) =3a(3) =16a(4) =71a(5) =345a(6) =1624a(7) =17121a(8) =71577a(9) =345342a(10) =1624171a(11) =17121011a(12) =71577060a(13) =345342131a(14) =1624173733a(15) =17331156576a(16) =71473314601a(17) =345325637555