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a(n) = max_{k <= n} A347696(k).
2

%I #11 Oct 11 2021 12:01:42

%S 0,0,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,

%T 7,7,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,10,10,10,

%U 10,10,10,10,10,10,10,10,10,10,10,10,10,11

%N a(n) = max_{k <= n} A347696(k).

%C The n-th run of consecutive equal terms appears to have length A137688(n). - _Rémy Sigrist_, Oct 11 2021

%H Rémy Sigrist, <a href="/A347697/b347697.txt">Table of n, a(n) for n = 0..8191</a>

%H Ravi Vakil, <a href="https://doi.org/10.1016/S0012-365X(98)00383-5">On the Steenrod length of real projective spaces: finding longest chains in certain directed graphs</a>, Discrete Mathematics 204 (1999) 415-425.

%H Rémy Sigrist, <a href="/A347697/a347697_1.txt">C program for A347697</a>

%o (C) See Links section.

%Y Cf. A137688, A347696.

%K nonn

%O 0,5

%A _N. J. A. Sloane_, Oct 11 2021

%E More terms from _Rémy Sigrist_, Oct 11 2021