A157438 Primes p such that p^2 divides A085606((p-1)/2) = ((p-1)/2-1)^((p-1)/2) - 1.

5, 127, 607

Offset: 1

Author

Alexander Adamchuk, Mar 01 2009

Keywords

• hard
• more
• nonn
• bref

Comments

Primes p such that (-3/2)^((p-1)/2) == 1 - p/6 (mod p^2).[Max Alekseyev, Dec 05 2010]

Primes p that divide A085606((p-1)/2) are listed in A157437.

No other terms below 10^11. [From Max Alekseyev, Dec 05 2010.]

Crossrefs

Cf. A085606, A157437.