A023514 - OEIS

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A023514

Sum of exponents in prime-power factorization of prime(n) + 1.

1, 2, 2, 3, 3, 2, 3, 3, 4, 3, 5, 2, 3, 3, 5, 4, 4, 2, 3, 5, 2, 5, 4, 4, 3, 3, 4, 5, 3, 3, 7, 4, 3, 4, 4, 4, 2, 3, 5, 3, 5, 3, 7, 2, 4, 5, 3, 6, 4, 3, 4, 6, 3, 5, 3, 5, 5, 5, 2, 3, 3, 4, 4, 5, 2, 3, 3, 3, 4, 4, 3, 6, 5, 3, 4, 8, 4, 2, 3, 3, 5, 2, 7, 3, 5, 4, 5, 2, 4, 5, 5, 7, 4, 4, 5, 6, 4, 4, 3 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Paolo P. Lava, Table of n, a(n) for n = 1..10000`
	MAPLE	`with(numtheory):` `a:= n-> add(i[2], i=ifactors (ithprime(n)+1)[2]):` `seq (a(n), n=1..100);`
	MATHEMATICA	`Array[Plus@@Last/@FactorInteger[Prime[ # ]+1]&, 6! ] [From Vladimir Joseph Stephan Orlovsky, Feb 28 2010]`
	CROSSREFS	`Cf. A210934.` `Sequence in context: A196058 A081844 A110012 * A179751 A039645 A048687` `Adjacent sequences: A023511 A023512 A023513 * A023515 A023516 A023517`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling`
	STATUS	`approved`

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Last modified May 20 16:20 EDT 2013. Contains 225463 sequences.