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A071067 First highest palindromic prime pyramid with a(1)=2 such that (number of digits in a(n+1)) = (number of digits in a(n)) + 4. 0
2, 70207, 357020753, 9635702075369, 33963570207536933, 723396357020753693327, 1272339635702075369332721, 97127233963570207536933272179, 119712723396357020753693327217911 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
There are 2 such highest "Palindromic prime pyramid" (beginning with 2) with 26 elements.
REFERENCES
G. L. Honaker Jr. and C. Caldwell, Palindromic prime pyramids, J. Recreational Mathematics, vol. 30.3, 1999-2000, pp. 169-176.
J.-P. Delahaye, "Pour la science", (French edition of Scientific American), Juin 2002, p. 99
LINKS
CROSSREFS
Sequence in context: A272137 A272248 A195003 * A321246 A371645 A060069
KEYWORD
fini,nonn,base
AUTHOR
Benoit Cloitre, May 26 2002
STATUS
approved

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Last modified June 22 21:17 EDT 2024. Contains 373609 sequences. (Running on oeis4.)