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A051169 Smallest number m such that 2*m - p is composite for the first n primes p. 3
3, 6, 15, 49, 49, 49, 49, 110, 154, 154, 278, 278, 278, 278, 496, 496, 496, 496, 496, 496, 1321, 1321, 1321, 1321, 1321, 1321, 2686, 2686, 2686, 2686, 2686, 2686, 2686, 3713, 3713, 3713, 3713, 3713, 3713, 21766, 21766, 21766, 21766, 21766, 21766, 21766 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

Computed by Peter G. Anderson at the Rochester Institute of Technology.

LINKS

Paul S. Bruckman and T. D. Noe, Table of n, a(n) for n=1..974

EXAMPLE

a(2) = 6 because 2*6-2 = 10 and 2*6-3 = 9 are composite.

CROSSREFS

See A051610 and A116111 for records. Cf. A025017.

Sequence in context: A056382 A028401 A005655 * A051610 A102356 A102936

Adjacent sequences:  A051166 A051167 A051168 * A051170 A051171 A051172

KEYWORD

nice,nonn

AUTHOR

Paul S. Bruckman (pbruckman(AT)hotmail.com)

EXTENSIONS

More terms from Paul S. Bruckman, Jan 20 2007

Edited by N. J. A. Sloane (njas(AT)research.att.com), Apr 14 2007, May 04 2007, Jun 10 2008

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.