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Search: id:A048448
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| A048448 |
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a(n) = prime(n-1) + prime(n+1) (assuming prime(i) = 0 for i < 1). |
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+0
22
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| 2, 3, 7, 10, 16, 20, 28, 32, 40, 48, 54, 66, 72, 80, 88, 96, 106, 114, 126, 132, 140, 150, 156, 168, 180, 190, 200, 208, 212, 220, 236, 244, 264, 270, 286, 290, 306, 314, 324, 336, 346, 354, 370, 374, 388, 392, 408, 422, 438, 452, 460, 468, 474, 490, 498, 514
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Starting from prime sequence add previous and next term yielding generation 2.
a(n) = A116366(n,n-2) for n>2. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 06 2006
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MATHEMATICA
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Table[ Prime[n + 2] + Prime[n], {n, 1, 54}]
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PROGRAM
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(PARI) je=[]; for(n=0, 150, je=concat(je, prime(n)+prime(n+2))); je
(Mupad) ithprime(i)+ithprime(i+2) $ i = 1..54 - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 26 2007
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CROSSREFS
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Generation 1 is the 'prime sequence A000040'. See A048449-A048466. See also A047844.
Sequence in context: A002238 A002255 A088163 this_sequence A054060 A024832 A100847
Adjacent sequences: A048445 A048446 A048447 this_sequence A048449 A048450 A048451
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KEYWORD
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nonn
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com), May 15 1999.
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