id:A154561 - OEIS Search Results

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Primes of the form sum of digits of n + sum of digits of prime(n).

+0
1

3, 5, 11, 7, 13, 17, 23, 13, 23, 23, 13, 17, 23, 29, 19, 17, 29, 23, 17, 19, 23, 29, 19, 31, 23, 17, 19, 29, 31, 31, 23, 11, 19, 19, 17, 19, 23, 17, 17, 17, 23, 29, 31, 23, 29, 23, 13, 19, 19, 31, 31, 31, 29, 23, 13, 23, 29, 23, 29, 29, 19, 23, 31, 37, 23, 29, 37 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`If n=1 and prime=2, then 1+2=3(prime)=a(1). If n=2 and prime=3, then 2+3=5(prime)=a(2). If n=3 and prime=5, then 3+5=8=composite. If n=4 and prime=7, then 4+7=11(prime)=a(3). If n=5 and prime=11, then 5+1+1=7(prime)=a(4), etc.`
	CROSSREFS	`Cf. A000040.` `Sequence in context: A137656 A046228 A132162 this_sequence A073653 A145398 A087322` `Adjacent sequences: A154558 A154559 A154560 this_sequence A154562 A154563 A154564`
	KEYWORD	`nonn,base`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jan 12 2009`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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