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Search: id:A154487
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| A154487 |
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a(n+1)-+a(n)=prime, a(0)=0,a(1)=7. |
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+0
11
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| 0, 7, 10, 13, 16, 21, 26, 33, 38, 41, 48, 53, 56, 75, 82, 85, 88, 91, 102, 109, 114, 119, 122, 129, 134, 137, 140, 143, 150, 157, 160, 171, 176, 183, 190, 193, 196, 201, 208, 211, 222, 227, 230, 233, 246, 253, 256, 267, 274, 297, 302, 305, 308, 311, 330, 343
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Sum and difference of any of two consecutive numbers in current sequence are prime numbers : 10-7=3;10+7=17, 230-227=3;230+227=457, 233-230=3;233+230=463,...
Variant of A090955. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 12 2009]
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MATHEMATICA
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a=0; b=7; lst={a, b}; Do[If[PrimeQ[n-b]&&PrimeQ[n+b], AppendTo[lst, n]; a=b; b=n], {n, b+1, 7!}]; lst
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CROSSREFS
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Cf. A154484, A154485, A154486
Sequence in context: A024888 A112414 A034810 this_sequence A023390 A096678 A026319
Adjacent sequences: A154484 A154485 A154486 this_sequence A154488 A154489 A154490
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 10 2009
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