A081222 - OEIS

A081222

Smallest number m with Sum_{k=n..n+m} mu(k) = 0, where mu=A008683 (Möbius function).

1, 92, 36, 0, 1, 1, 3, 0, 0, 1, 4, 0, 1, 5, 2, 0, 5, 0, 2, 0, 9, 1, 3, 0, 0, 3, 0, 0, 6, 4, 2, 0, 40, 9, 2, 0, 1, 4, 2, 0, 17, 15, 3, 0, 0, 1, 4, 0, 0, 0, 2, 0, 2, 0, 16, 0, 4, 1, 6, 0, 1, 5, 0, 0, 1, 27, 2, 0, 1, 17, 6, 0, 1, 5, 0, 0, 1, 8, 3, 0, 0, 1, 2, 0, 24, 19, 2, 0, 2, 0, 12, 0, 9, 7, 2, 0, 120, 0, 0

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OFFSET

1,2

COMMENTS

a(n) = 0 if and only if n is in A013929. - Robert Israel, Jan 21 2019

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

MAPLE

f:= proc(n) local t, k;

t:= 0;

for k from n do

t:= t + numtheory:-mobius(k);