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 A261881 Minimal nested palindromic primes with seed 0. 37
 0, 101, 31013, 3310133, 933101339, 1093310133901, 30109331013390103, 333010933101339010333, 33330109331013390103333, 993333010933101339010333399, 104993333010933101339010333399401, 7810499333301093310133901033339940187 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 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. Guide to related sequences: seed  sequence 0     A261881 1     A261818 2     A053600 3     A082563 4     A261821 5     A261822 6     A261823 7     A261824 8     A261825 9     A261826 000   A262531 0^5   A262532 0^7   A262533 0^9   A260250 010   A260459 111   A261820 1^5   A262497 1^7   A262498 1^9   A262499 LINKS Clark Kimberling, Table of n, a(n) for n = 1..300 EXAMPLE As a triangle: ........0 .......101 ......31013 .....3310133 ....933101339 ..1093310133901 30109331013390103 MATHEMATICA s = {0}; Do[NestWhile[# + 1 &, 1, ! PrimeQ[tmp = FromDigits[Join[#, IntegerDigits[Last[s]], Reverse[#]] &[IntegerDigits[#]]]] &]; AppendTo[s, tmp], {15}]; s (* Peter J. C. Moses, Sep 01 2015 *) CROSSREFS Cf. A261818. Sequence in context: A136098 A153807 A183056 * A262633 A261966 A076127 Adjacent sequences:  A261878 A261879 A261880 * A261882 A261883 A261884 KEYWORD nonn,easy,base AUTHOR Clark Kimberling, Sep 23 2015 STATUS approved

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Last modified August 17 06:10 EDT 2017. Contains 290635 sequences.