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 A081222 Smallest number m with Sum_{k=n..n+m} mu(k) = 0, where mu=A008683 (Möbius function). 1
 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 (list; graph; refs; listen; history; text; internal format)
 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); if t=0 then return k-n fi od end proc: map(f, [\$1..100]); # Robert Israel, Jan 21 2019 MATHEMATICA a[n_] := Module[{t = 0, k}, For[k = n, True, k++, t += MoebiusMu[k]; If[t == 0, Return[k - n]]]]; Array[a, 100] (* Jean-François Alcover, Aug 24 2020, after Maple *) CROSSREFS Cf. A002321, A008683, A013929, A028442. Sequence in context: A323060 A031200 A075479 * A033412 A015236 A057702 Adjacent sequences: A081219 A081220 A081221 * A081223 A081224 A081225 KEYWORD nonn AUTHOR Reinhard Zumkeller, Mar 10 2003 EXTENSIONS Corrected by Robert Israel, Jan 21 2019 STATUS approved

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Last modified February 29 13:01 EST 2024. Contains 370425 sequences. (Running on oeis4.)