A110704 Primes of form "n 42's followed by 43".

43, 4243, 424243, 42424243, 4242424243, 4242424242424243, 424242424242424242424242424242424243, 42424242424242424242424242424242424242424242424243

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: A357557 A015323 A145315 * A060485 A081795 A108837

Adjacent sequences: A110701 A110702 A110703 * A110705 A110706 A110707

Keyword

nonn

Author

Ray Chandler, Aug 04 2005

Status

approved