A244097 - OEIS

A244097

a(n) is the smallest k such that the sum of n consecutive values M(k) + M(k+1) + ... + M(k+n-1) is zero, where M(m) is the Moebius (or Möbius) function (A008683).

4, 1, 4, 6, 8, 5, 4, 10, 6, 7, 5, 4, 4, 8, 9, 6, 8, 5, 4, 6, 7, 5, 4, 4, 4, 9, 8, 10, 6, 7, 5, 4, 4, 5, 4, 14, 3, 3, 1, 1, 6, 10, 9, 8, 8, 6, 6, 8, 8, 6, 6, 10, 5, 4, 5, 3, 4, 1, 4, 4, 4, 5, 3, 26, 1, 4, 24, 10, 9, 8, 17, 6, 16, 13, 12, 15, 10, 9, 8, 10, 6, 7

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OFFSET

1,1

LINKS

Michel Lagneau, Table of n, a(n) for n = 1..1000

EXAMPLE

a(1)= 4 => M(4) = 0;

a(2)= 1 => M(1)+ M(2) = 1-1 = 0;

a(3)= 4 => M(4)+ M(5)+ M(6) = 0-1+1 = 0;

a(4)= 6 => M(6)+ M(7)+ M(8) + M(9) = 1-1+0+0 = 0;

a(5)= 8 => M(8)+ M(9)+ M(10)+ M(11)+ M(12) = 0+0+1-1+0 = 0.

MATHEMATICA