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A110704 Primes of form "n 42's followed by 43". 1
43, 4243, 424243, 42424243, 4242424243, 4242424242424243, 424242424242424242424242424242424243, 42424242424242424242424242424242424242424242424243 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Products of first three (77402711107), four (3283751424862167001) and five (13931066652821050218557005243) terms are Zeisel numbers (A051015) with coefficients (100,-57).

LINKS

Table of n, a(n) for n=1..8.

MATHEMATICA

t = 1; Do[ t = t*100 - 57; If[PrimeQ[t], Print[t]], {n, 0, 24}]

CROSSREFS

Cf. A110705.

Sequence in context: A265234 A015323 A145315 * A060485 A081795 A108837

Adjacent sequences:  A110701 A110702 A110703 * A110705 A110706 A110707

KEYWORD

nonn

AUTHOR

Ray Chandler, Aug 04 2005

STATUS

approved

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Last modified December 5 03:59 EST 2021. Contains 349530 sequences. (Running on oeis4.)