A164125 First differences of A029971.

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

Offset

1,1

Comments

Differences between primes that are palindromic in base 3.

Links

Table of n, a(n) for n=1..48.

Example

a(4) = 22 = A029971(5)-A029971(4).

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

Crossrefs

Cf. A164124, A029971, A016041

Sequence in context: A063432 A364121 A038324 * A212529 A004289 A360494

Adjacent sequences: A164122 A164123 A164124 * A164126 A164127 A164128

Keyword

nonn,base

Author

Vladimir Joseph Stephan Orlovsky, Aug 10 2009

Extensions

Definition simplified, initial 0 removed by R. J. Mathar, Nov 17 2009

Status

approved