A015973 Positive integers n such that n | (3^n + 2).

1, 5, 77, 278377, 3697489, 219596687717, 56865169816619

Offset: 1

Author

Robert G. Wilson v

Keywords

• nonn
• more

Comments

No other terms below 10^15. Some larger term: 3142423971953435020522506484187. - Max Alekseyev, Aug 04 2011

Crossrefs

Cf. A015940, A050259, A123062

Solutions to 3^n == k (mod n): A277340 (k=-11), A277289 (k=-7), A277288 (k=-5), this sequence (k=-2), A015949 (k=-1), A067945 (k=1), A276671 (k=2), A276740 (k=5), A277126 (k=7), A277274 (k=11).

Extensions

a(1)=1 prepended and a(6)-a(7) added by Max Alekseyev, Aug 04 2011