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A156557 Primes of the form Sum{k=1..n}{n^k mod (n+k)} 3
2, 23, 43, 67, 73, 541, 673, 911, 2333, 3733, 4451, 4657, 5279, 6043, 7591, 8887, 9521, 12539, 16651, 20173, 26111, 26981, 30029, 30817, 33601, 34981, 37357, 41983, 42359, 45007, 47947, 53819, 58907, 69239, 75617, 79309, 81421, 97931, 101879 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

MAPLE

P:=proc(i) local a, n; for n from 0 by 1 to i do a:=sum('(n^k mod (n+k))', 'k'=1..n); if isprime(a) then print(a); fi; od; end: P(500);

CROSSREFS

A156556, A156558, A156559

Sequence in context: A045392 A107374 A068835 * A002428 A105440 A139831

Adjacent sequences:  A156554 A156555 A156556 * A156558 A156559 A156560

KEYWORD

easy,nonn

AUTHOR

Paolo P. Lava & Giorgio Balzarotti (paoloplava(AT)gmail.com), Feb 10 2009

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Last modified February 15 10:06 EST 2012. Contains 205763 sequences.