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A108836 Primes such that the outer 2 digits are n and n-1 and all inner digits are 8, where 0 < n < 9. 0
281, 887, 8887, 48883, 888887, 888888887, 48888888883, 888888888887, 2888888888881, 4888888888883, 48888888888883, 2888888888888888888888888881, 48888888888888888888888888888888888888883 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..13.

PROG

(PARI) n10np1(n, d) = { local(x, y, k); for(x=1, n, for(k=1, 8, y=10^(x+1)*k+floor(10^x*d/9)*10+k-1; if(isprime(y), print1(y", ")) ) ) }

CROSSREFS

Sequence in context: A163184 A122710 A161191 * A295983 A264150 A289543

Adjacent sequences:  A108833 A108834 A108835 * A108837 A108838 A108839

KEYWORD

easy,nonn,base

AUTHOR

Cino Hilliard, Jul 11 2005

STATUS

approved

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Last modified March 5 16:55 EST 2021. Contains 341827 sequences. (Running on oeis4.)