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A065136
Numbers n such that n = pi(n)*k + 1 for some k.
1
3, 9, 11, 13, 28, 34, 37, 43, 121, 336, 341, 351, 356, 361, 1081, 1087, 1135, 3060, 3074, 3081, 3088, 3095, 8409, 8425, 8441, 8457, 8465, 8473, 23527, 23536, 24301, 64541, 64581, 64591, 64601, 64611, 64651, 64661, 64691, 64701, 64711, 64721
OFFSET
1,1
COMMENTS
Solutions to Mod[n,PrimePi[n]] = 1, i.e. A065134(n) = 1.
LINKS
EXAMPLE
n=28: Pi(28)=9 and 28=3*Pi(28)+1, so 28 is here; n=27 is present in A057809. A large proportion of A057809(m)+1 numbers (but not all of them) arise in this sequence. Numbers from A057809 arise in clusters [see grouping around 8450, 64650, 480900 etc.]
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Oct 15 2001
STATUS
approved