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 A117702 Palindromic primes in base 7 (written in base 7). 3
 2, 3, 5, 131, 212, 313, 515, 535, 616, 10301, 10501, 11111, 12521, 13531, 14141, 15151, 15551, 16361, 20302, 21512, 22322, 22522, 23132, 24542, 25352 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 Eric Weisstein: Palindromic Prime. MATHEMATICA pal7Q[n_]:=Module[{idn7=IntegerDigits[n, 7]}, idn7==Reverse[idn7]]; FromDigits[ IntegerDigits[#, 7]]&/@Select[Prime[Range[1000]], pal7Q] (* Harvey P. Dale, Aug 21 2021 *) CROSSREFS Cf. A029975. Sequence in context: A321362 A230372 A234900 * A041343 A229349 A160600 Adjacent sequences: A117699 A117700 A117701 * A117703 A117704 A117705 KEYWORD nonn,base AUTHOR Martin Renner, Apr 13 2006 STATUS approved

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Last modified June 14 04:14 EDT 2024. Contains 373393 sequences. (Running on oeis4.)