Odd perfect powers n not congruent to 1 mod 6 such that n*4^k - 1 has a covering set.

A252020

Odd perfect powers n not congruent to 1 mod 6 such that n*4^k - 1 has a covering set.

Terms

    a(0) =56169a(1) =651249a(2) =20985561a(3) =1054235961a(4) =1688470281a(5) =3718682361a(6) =3923393769a(7) =4013349201a(8) =5866487649a(9) =6557598441a(10) =7121165769a(11) =7232992209a(12) =8527229649a(13) =8764891641a(14) =9387865881a(15) =10441365489a(16) =12922915041a(17) =15279184881a(18) =17063935641a(19) =19501284609a(20) =19760206041

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