A079154 - OEIS

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A079154

Numbers n such that reverse(A004154(n)) - 1 is prime.

3, 4, 12, 30, 33 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Some of the larger entries may only correspond to probable primes.`
	MATHEMATICA	`f[n_] := n!/10^Sum[Floor[n/5^k], {k, 1, Log[10, n] + 1}]; Do[ If[ PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ f[n]]]] - 1], Print[n]], {n, 1, 800}]`
	CROSSREFS	`Cf. A078305, A004154.` `Sequence in context: A147569 A090660 A000208 * A101716 A109771 A052626` `Adjacent sequences: A079151 A079152 A079153 * A079155 A079156 A079157`
	KEYWORD	`base,more,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com) and Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 27 2002`

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.