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A164125
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First differences of A029971.
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2
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11, 10, 128, 22, 60, 524, 180, 156, 156, 180, 58, 180, 66, 90, 90, 66, 90, 6320, 714, 1008, 2190, 2650, 1722, 198, 1722, 41510, 810, 594, 1620, 6570, 3546, 5736, 1620, 1404, 810, 594, 1620, 522, 4428, 810, 1332, 1620, 1404, 7356, 594, 810, 3546, 2214
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Differences between primes that are palindromic in base 3.
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EXAMPLE
| a(4) = 22 = A029971(5)-A029971(4).
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MATHEMATICA
| f[n_]:=FromDigits[RealDigits[n, 3][[1]]]==FromDigits[Reverse[RealDigits[n, 3][[1]]]]; a=2; lst={}; Do[p=Prime[n]; If[f[p], AppendTo[lst, p-a]; a=p], {n, 1, 8!, 1}]; lst
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CROSSREFS
| Cf. A164124, A029971, A016041
Sequence in context: A070836 A063432 A038324 * A004289 A167262 A014459
Adjacent sequences: A164122 A164123 A164124 * A164126 A164127 A164128
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KEYWORD
| nonn,base
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 10 2009
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EXTENSIONS
| Definition simplified, initial 0 removed by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 17 2009
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