id:A100021 - OEIS Search Results

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Numbers of the form 3prime(n) - prime(n+1) - 3.

+0
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0, 1, 5, 7, 17, 19, 29, 31, 37, 53, 53, 67, 77, 79, 85, 97, 113, 113, 127, 137, 137, 151, 157, 167, 187, 197, 199, 209, 211, 209, 247, 253, 269, 265, 293, 293, 305, 319, 325, 337, 353, 349, 377, 379, 389, 383, 407, 439, 449, 451, 457, 473, 469, 493, 505, 517, 533, 533, 547 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Except for the initial term, a(n)==(1,5) mod 6.`
	FORMULA	`a(n) = A098764(n) - 3.`
	MAPLE	`f:=n->3*ithprime(n)-ithprime(n+1)-3;`
	CROSSREFS	`Cf. A099389 for the primes arising in the sequence, A098764.` `Adjacent sequences: A100018 A100019 A100020 this_sequence A100022 A100023 A100024` `Sequence in context: A078764 A045318 A040102 this_sequence A099389 A099382 A092242`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Nov 20 2004`
	EXTENSIONS	`Corrected by Neven Juric (neven.juric(AT)apis-it.hr), rechecked by njas, Jun 13 2006`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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