A110767 - OEIS

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A110767

a(1) = 11 then the least number of concatenation of n that gives prime when placed on the most significant side of the previous concatenation.

0

11, 2, 33, 444, 55, 6, 777777777777

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OFFSET

1,1

COMMENTS

Contribution from David Wasserman, Dec 30 2008: (Start)

Next term has 634 digits.

A088061 gives the primes. (End)

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

11,211,33211,44433211,5544433211,... are all primes.

CROSSREFS

Cf. A088061. [From David Wasserman, Dec 30 2008]

Sequence in context: A364697 A298439 A095157 * A089365 A130217 A096044

Adjacent sequences: A110764 A110765 A110766 * A110768 A110769 A110770

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Aug 12 2005

STATUS

approved