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A215692 Smallest prime whose decimal expansion consists of the concatenation of a 1-digit cube, a 2-digit cube, a 3-digit cube, ..., and an n-digit cube, or 0 if there is no such prime. 0
0, 127, 127343, 1275122197, 127125100019683, 127125100012167148877, 1271251000106481038233442951, 127125100010648103823100000014348907, 127125100010648103823100000010077696108531333, 1271251000106481038231000000100776961005446251939096223 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This is to cubes A000578 as A215689 is to squares A000290.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

a(1) = 0 because no 1-digit cube {0,1,8} is prime.

a(2) = 127 because 127 is prime and is the concatenation of 1=1^3 and 27 = 3^3.

CROSSREFS

Cf. A000040, A000578, A215689, A215641, A215647.

Sequence in context: A217914 A203798 A195218 * A212860 A334668 A135813

Adjacent sequences:  A215689 A215690 A215691 * A215693 A215694 A215695

KEYWORD

nonn,base

AUTHOR

Jonathan Vos Post, Aug 20 2012

EXTENSIONS

More terms from Alois P. Heinz, Aug 21 2012

STATUS

approved

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Last modified June 4 01:24 EDT 2020. Contains 334808 sequences. (Running on oeis4.)