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A176272
Primes of the form 2(10^n-1)/3 * 10^ceiling(log_10(n+1)) + n.
1
61, 66666667, 6666666666666666666666666666666666666666641
OFFSET
1,1
COMMENTS
Equivalently, primes with decimal representation as n 6's with n's decimal representation concatenated. The next term is too large to include (2433 decimal digits).
CROSSREFS
Cf. A176090 (corresponding n), A065589, A037065.
Sequence in context: A068533 A093631 A087513 * A173418 A147667 A022084
KEYWORD
nonn,bref
AUTHOR
Rick L. Shepherd, Apr 13 2010
STATUS
approved