A124301 Smallest number m such that A124300(m) >= n.
1, 2, 29, 242, 844, 22020, 217070, 1092747, 8870024, 221167422, 221167422
Offset: 0
Examples
a(4) = 844: mu(844) = mu(2*2*211) = 0; mu(844+1) = mu(5*13*13) = 0; mu(844+2) = mu(2*3*3*47) = 0; mu(844+3) = mu(7*11*11) = 0; mu(844+4) = mu(2*2*2*2*53) = 0.
Programs
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PARI
a(n)={x=1;k=moebius(x);y=n+x;while(x -
Python
from itertools import count from sympy import mobius def A124301(n): c, m = 1, 1 for i in count(2): k = mobius(i) if m!=k: if c>n: return i-c c = 0 c += 1 m = k # Chai Wah Wu, Oct 08 2024
Extensions
a(7)-a(8) from Peter T. Wang (peterw(AT)ugcs.caltech.edu), Feb 04 2007
Name edited by and a(9)-a(10) from Jinyuan Wang, Apr 06 2019
Comments