id:A102906 - OEIS Search Results

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Primes of the form 3^n+28=3^n+27+1.

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31, 37, 109, 271, 757, 59077, 4782997, 43046749, 847288609471, 717897987691852588770277, 58149737003040059690390197, 30903154382632612361920641803557, 1824800363140073127359051977856583949 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`If 3^n+28 is prime then a[m]=3^n+28`
	MATHEMATICA	`a = Delete[Union[Flatten[Table[If [PrimeQ[3^n + 28] == True, 3^n + 28, 0], {n, 1, 200}]]], 1]`
	CROSSREFS	`Sequence in context: A067826 A107013 A107012 this_sequence A062213 A097759 A053237` `Adjacent sequences: A102903 A102904 A102905 this_sequence A102907 A102908 A102909`
	KEYWORD	`nonn`
	AUTHOR	`Roger Lee Bagula (rlbagulatftn(AT)yahoo.com), Mar 01 2005`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research