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 A262533 Minimal nested palindromic primes with seed 0000000. 2
 19000000091, 1190000000911, 36119000000091163, 953611900000009116359, 9095361190000000911635909, 790953611900000009116359097, 1479095361190000000911635909741, 72147909536119000000091163590974127, 10572147909536119000000091163590974127501 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS Let s be a palindrome and put a(1) = s. Let a(2) be the least palindromic prime having s in the middle; for n > 2, let a(n) be the least palindromic prime having a(n-1) in the middle. Then (a(n)) is the sequence of minimal nested palindromic primes with seed s. (For A260444, the seed is not an integer, so that the offset is 2.) LINKS Clark Kimberling, Table of n, a(n) for n = 2..200 EXAMPLE As a triangle:             0000000           19000000091          1190000000911        36119000000091163      953611900000009116359    9095361190000000911635909   790953611900000009116359097 MATHEMATICA s0 = "0000000"; s = {ToExpression[s0]}; Do[NestWhile[# + 1 &, 1, ! PrimeQ[tmp = FromDigits[Join[#, IntegerDigits[Last[s], 10, Max[StringLength[s0], Length[IntegerDigits[Last[s]]]]], Reverse[#]]&[IntegerDigits[#]]]] &]; AppendTo[s, tmp], {10}]; s0 <> ", " <> StringTake[ToString[Rest[s]], {2, -2}] (* Peter J. C. Moses, Sep 23 2015 *) CROSSREFS Cf. A261881. Sequence in context: A270895 A273186 A185932 * A317288 A234397 A234194 Adjacent sequences:  A262530 A262531 A262532 * A262534 A262535 A262536 KEYWORD nonn,base,easy AUTHOR Clark Kimberling, Sep 24 2015 STATUS approved

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Last modified December 13 17:17 EST 2019. Contains 329970 sequences. (Running on oeis4.)