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A272728
a(n) = A272727(2n-1) - n.
3
0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 2, 1, 0, 1, 0, 1, 0, 1, 2, 3, 4, 3, 2, 1, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 2, 1, 0, 1, 2, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 4, 5, 4, 3, 2, 1, 0, 1, 2, 1, 0, 1, 0, 1, 0, 1, 2, 3, 4, 3, 2, 1, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 0, 1, 2, 3, 2, 1, 0
OFFSET
1,5
COMMENTS
a(n)>=0.
|a(n+1)-a(n)|=1.
All local minima occur where a(n)=0. Values at the local maxima are listed in A272729.
Empirically: The least n such that a(n) = k - 1 is n = 2^k - k. - Danny Rorabaugh, May 12 2016
LINKS
MATHEMATICA
nn = 120; s = Nest[Append[#, Count[# - Reverse[#], x_ /; x == 0]] &, {0}, 2 nn - 1]; Table[s[[2 n]] - n, {n, nn}] (* Michael De Vlieger, May 05 2016, after Ivan Neretin at A272727 *)
CROSSREFS
Sequence in context: A334107 A346700 A301574 * A174695 A337622 A165577
KEYWORD
nonn
AUTHOR
Ivan Neretin, May 05 2016
STATUS
approved