A210336 Pairs of consecutive primes {p,q} for which the numbers of distinct residues of all factorials mod p and mod q are consecutive integers.

2, 3, 3, 5, 5, 7, 7, 11, 61, 67, 157, 163, 179, 181, 613, 617, 677, 683, 701, 709, 1433, 1439, 1523, 1531, 1723, 1733, 1733, 1741, 2081, 2083, 2273, 2281, 3917, 3919, 5737, 5741, 6329, 6337, 6691, 6701, 6991, 6997, 8329, 8353, 9173, 9181, 9533, 9539, 11831, 11833

Offset: 1

Author

Vladimir Shevelev, Mar 20 2012

Keywords

• nonn
• tabf

Links

• Amiram Eldar, Table of n, a(n) for n = 1..266

Crossrefs

Cf. A210184, A210242.

Formula

pi(a(2*n)) = pi(a(2*n-1)) + 1.

A210184(pi(a(2*n))) = A210184(pi(a(2*n-1))) + 1.

Extensions

Missing terms inserted and more terms added by Amiram Eldar, Sep 14 2019