Let m = n-th number not divisible by 3 (A001651); a(n) = position of m in A065075, or -1 if never appears in A065075.

A230289

Let m = n-th number not divisible by 3 (A001651); a(n) = position of m in A065075, or -1 if never appears in A065075.

Terms

    a(0) =1a(1) =3a(2) =4a(3) =7a(4) =6a(5) =5a(6) =8a(7) =9a(8) =10a(9) =13a(10) =24a(11) =41a(12) =26a(13) =51a(14) =64a(15) =151a(16) =276a(17) =335a(18) =446a(19) =219a(20) =550a(21) =451a(22) =1674a(23) =1685a(24) =2192a(25) =2667a(26) =9220a(27) =17647a(28) =3972a(29) =9221

External references