id:A033593 - OEIS Search Results

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(n-1)*(2*n-1)*(3*n-1)*(4*n-1).

+0
2

1, 0, 105, 880, 3465, 9576, 21505, 42120, 74865, 123760, 193401, 288960, 416185, 581400, 791505, 1053976, 1376865, 1768800, 2238985, 2797200, 3453801, 4219720, 5106465, 6126120, 7291345, 8615376 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`The sequence of n such that n is prime and (2n+1) is prime is the sequence of Sophie Germain primes A005384; the subsequence of those for which in addition (3n+2) is prime is A067256; and the subsequence of those for which in addition (4*n+3) is prime is A067257. - Jonathan Vos Post (jvospost3(AT)gmail.com), Dec 15 2004`
	CROSSREFS	`a(n)=A011245(-n).` `Cf. A005384, A067256, A033594, A067257.` `Sequence in context: A133767 A166816 A166798 this_sequence A058844 A165382 A051015` `Adjacent sequences: A033590 A033591 A033592 this_sequence A033594 A033595 A033596`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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