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A046210 Smallest palindromic prime that generates a palindromic prime pyramid of height n. 3
11, 131, 2, 929, 10301, 16361, 10281118201, 35605550653, 7159123219517 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Let p be palindromic prime; look for smallest palindromic prime that has previous term as a centered substring and has 2 more digits; repeat until no such palindromic prime can be found; then height(p) = number of rows in pyramid.

Each row of pyramid must be the smallest prime that can be used.

LINKS

Author?, MAA Online

EXAMPLE

Example: 16361 1163611 311636113 33116361133 3331163611333 333311636113333, stop; height(16361)=6.

CROSSREFS

Cf. A034276.

Sequence in context: A015603 A184280 A157718 * A100757 A099677 A142187

Adjacent sequences:  A046207 A046208 A046209 * A046211 A046212 A046213

KEYWORD

nonn,base

AUTHOR

Felice Russo (frusso(AT)micron.com), Jan 25 2000

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Last modified February 13 04:07 EST 2012. Contains 205435 sequences.