a(n)=(A210686(n)-1)/30.

Terms

a(0) =2a(1) =212a(2) =359a(3) =377a(4) =593a(5) =649a(6) =667a(7) =813a(8) =865a(9) =1003a(10) =1175a(11) =1397a(12) =1521a(13) =1581a(14) =1957a(15) =2263a(16) =2409a(17) =2472a(18) =2878a(19) =2994a(20) =3057a(21) =3100a(22) =3177a(23) =3439a(24) =3644a(25) =4134a(26) =4139a(27) =4432a(28) =4983a(29) =5129