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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
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
LINKS
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: A153807 A327741 A183056 * A262633 A261966 A076127
KEYWORD
nonn,easy,base
AUTHOR
Clark Kimberling, Sep 23 2015
STATUS
approved