

A035346


Let F(n)=Q(n)P(n) be the Fortunate numbers (A005235); sequence gives n such that F(n)=p(n+1).


5



1, 2, 3, 6, 7, 8, 14, 16, 17, 21, 73, 801
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OFFSET

0,2


REFERENCES

S. W. Golomb, The evidence for Fortune's conjecture, Math. Mag. 54 (1981), 209210.


LINKS

Table of n, a(n) for n=0..11.


EXAMPLE

a(10) = 21 because A002110(21)+Prime[22] = 40729680599249024150621323549 = 2.3.5.....67.71.73 + 79 is prime.


CROSSREFS

Cf. A002110, A005235, A006862, A035345.
Sequence in context: A166458 A189013 A127330 * A030164 A066646 A215488
Adjacent sequences: A035343 A035344 A035345 * A035347 A035348 A035349


KEYWORD

nonn


AUTHOR

N. J. A. Sloane.


EXTENSIONS

The terms 21 and 73 were found by Labos Elemer, May 02 2000.
One more term from Ralf Stephan, Oct 20 2002


STATUS

approved



