id:A156557 - OEIS Search Results

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Primes of the form Sum{k=1..n}{n^k mod (n+k)}

+0
4

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; listen)

	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 this_sequence A002428 A105440 A139831` `Adjacent sequences: A156554 A156555 A156556 this_sequence A156558 A156559 A156560`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Feb 10 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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