id:A142348 - OEIS Search Results

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Primes of the form (p(n)+r(n)), where p(n)=n-th prime and r(n)=n-th nonprime.

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2, 13, 19, 31, 37, 47, 61, 103, 137, 149, 239, 293, 313, 349, 397, 421, 439, 463, 491, 587, 727, 751, 863, 929, 1049, 1153, 1187, 1229, 1289, 1297, 1361, 1427, 1483, 1493, 1553, 1571, 1601, 1741, 1787, 1867, 1933, 2027, 2069, 2131, 2239, 2389, 2411, 2423 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`If n=1, then p(1)+r(1)=2+0=2=a(1).` `If n=4, then p(4)+r(4)=7+6=13=a(2).` `If n=5, then p(5)+r(5)=11+8=19=a(3).` `If n=8, then p(8)+r(8)=19+12=31=a(4).` `If n=9, then p(9)+r(9)=23+14=37=a(5), etc.`
	CROSSREFS	`Cf. A000040, A141468.` `Sequence in context: A122139 A122136 A067208 this_sequence A020601 A027705 A121181` `Adjacent sequences: A142345 A142346 A142347 this_sequence A142349 A142350 A142351`
	KEYWORD	`nonn`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Sep 19 2008`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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