OFFSET
2,2
LINKS
J. B. Dobson A note on Lerch primes, arXiv:1311.2242 [math.NT], 2014.
J. B. Dobson A Characterization of Wilson-Lerch Primes, Integers, 16 (2016), A51.
Jonathan Sondow, Lerch Quotients, Lerch Primes, Fermat-Wilson Quotients, and the Wieferich-non-Wilson Primes 2, 3, 14771, in Proceedings of CANT 2011, arXiv:1110.3113 [math.NT], 2011-2012.
Jonathan Sondow, Lerch Quotients, Lerch Primes, Fermat-Wilson Quotients, and the Wieferich-non-Wilson Primes 2, 3, 14771, Combinatorial and Additive Number Theory, CANT 2011 and 2012, Springer Proc. in Math. & Stat., vol. 101 (2014), pp. 243-255.
FORMULA
a(n) = A197630(n) mod Prime(n), with n >= 2.
EXAMPLE
a(3) = A197630(3) mod Prime(3) = 13 mod 5 = 3.
PROG
(PARI) a(n) = my(p=prime(n), m=p-1); sum(k=1, m, k^m, -p-m!)/p^2 % p;
vector(100, n, a(n+1)) \\ Altug Alkan, Nov 22 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Jonathan Sondow, Oct 16 2011
STATUS
approved