

A232869


Primes p such that the average of the fourth powers of primes up to p is an integer.


3




OFFSET

1,1


COMMENTS

Otherwise said, prime(n) such that n divides prime(1)^4 + ... + prime(n)^4. The nvalues (indices) are given in A125907.


LINKS

Table of n, a(n) for n=1..4.


FORMULA

a(n) = prime(A125907(n)).


PROG

(PARI) S=n=0; forprime(p=1, , (S+=p^4)%n++print1(p", "))


CROSSREFS

Cf. A171399, A111441, A217599 (analog for squares), A223936 (3rd powers), A224083 (5th powers), A232733 (6th powers), A232865 (7th powers), A232822 (8th powers), A232962 (9th powers), A233132 (10th powers).
Sequence in context: A237521 A131558 A133857 * A153912 A247790 A233460
Adjacent sequences: A232866 A232867 A232868 * A232870 A232871 A232872


KEYWORD

nonn,hard,more,changed


AUTHOR

M. F. Hasler, Dec 01 2013


EXTENSIONS

a(4) from Bruce Garner, Feb 27 2021


STATUS

approved



