A070922 - OEIS

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A070922

First palindromic prime pyramids with a(1)=2 such that (number of digits in a(n+1)) = (number of digits in a(n)) + 2.

2, 929, 39293, 7392937, 373929373 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`There are only 2 palindromic prime pyramids beginning with 2 (each one is finite with 5 elements).`
	REFERENCES	`G. L. Honaker Jr. and C. Caldwell, Palindromic prime pyramids, J. Recreational Mathematics, vol. 30.3, pp. 169-176, 1999-2000.` `J.-P. Delahaye, "Pour la science", (French edition of Scientific American), Juin 2002, p. 99.`
	CROSSREFS	`Cf. A070927.` `Sequence in context: A159723 A070967 A070927 * A176940 A172386 A079233` `Adjacent sequences: A070919 A070920 A070921 * A070923 A070924 A070925`
	KEYWORD	`easy,fini,full,nonn,base`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), May 24 2002`

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Last modified February 14 03:03 EST 2012. Contains 205567 sequences.