Duplicate of A074874.

Terms

a(0) =1a(1) =3a(2) =5a(3) =11a(4) =23a(5) =55a(6) =87a(7) =123a(8) =383a(9) =501a(10) =957a(11) =1015a(12) =3565a(13) =3777a(14) =5667a(15) =6141a(16) =9069a(17) =11033