a(n) is the minimal odd odious k > 1, such that k^i, i=1,2,...,n, all are odious, or a(n)=0, if there is no such k.

A230496

a(n) is the minimal odd odious k > 1, such that k^i, i=1,2,...,n, all are odious, or a(n)=0, if there is no such k.

Terms

    a(0) =7a(1) =7a(2) =25a(3) =59a(4) =103a(5) =103a(6) =103a(7) =103a(8) =1305a(9) =1305a(10) =10525a(11) =10525a(12) =10525a(13) =25127a(14) =25127a(15) =25127a(16) =106501a(17) =215735a(18) =810163a(19) =810163a(20) =810163a(21) =9554677a(22) =13101403a(23) =13101403a(24) =14299679a(25) =37795511a(26) =37795511a(27) =37795511a(28) =3197105709a(29) =3197105709

External references