a(n) is the least prime of the form 2^j*3^k + 1, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.

A336773

a(n) is the least prime of the form 2^j*3^k + 1, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.

Terms

    a(0) =7a(1) =13a(2) =37a(3) =73a(4) =97a(5) =193a(6) =577a(7) =769a(8) =3457a(9) =10369a(10) =0a(11) =12289a(12) =629857a(13) =839809a(14) =147457a(15) =995329a(16) =1990657a(17) =786433a(18) =5308417a(19) =120932353a(20) =14155777a(21) =28311553a(22) =0a(23) =113246209a(24) =29386561537a(25) =3439853569a(26) =6879707137a(27) =1811939329a(28) =18345885697a(29) =3221225473

External references