

A073799


Values at which the least nonnegative remainder of division 2^n/Pi[n] equals zero arise in clusters of consecutive integers. Sequence gives initial terms of clusters.


2



2, 7, 19, 53, 131, 311, 719, 1619, 3671, 8161, 17863, 38873, 84017, 180503
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OFFSET

1,1


COMMENTS

Length of successive burst is 3,4,4,6,6,6,2,6,20,28,30,.. respectively. Next value seems a bit larger than double of previous one.


LINKS

Table of n, a(n) for n=1..14.


FORMULA

Solutions to Mod[2^(x1), Pi(x1)]>0 but Mod[2^x, Pi(x)]=0.


CROSSREFS

Cf. A000079, A000720, A015910, A062173, A064367, A073797, A073798.
Cf. A033844. [From R. J. Mathar, Sep 23 2008]
Sequence in context: A099484 A018030 A051354 * A040016 A145519 A030224
Adjacent sequences: A073796 A073797 A073798 * A073800 A073801 A073802


KEYWORD

nonn


AUTHOR

Labos Elemer, Aug 12 2002


STATUS

approved



