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Number of gaps in the set of all possible values in the set X(n) given in A075529.
0

%I #5 Feb 20 2025 22:00:47

%S 0,0,0,1,2,3,6,10,18,28,50,79,144,249,432,756

%N Number of gaps in the set of all possible values in the set X(n) given in A075529.

%H E. Ben-Naim and P. L. Krapivsky, <a href="http://arXiv.org/abs/cond-mat/0208072">Growth and Structure of Stochastic Sequences</a>, J. Phys. A (2002).

%H E. Ben-Naim, <a href="http://cnls-www.lanl.gov/People/ebn/pubs/reccur/reccur.html">Home page</a>

%e X(1) = {2} hence a(1)=0, X(2) = {3,4} hence a(2)=0, X(3) = {4,5,6,8} hence a(3)=1 because there is a gap between 6 and 8.

%K nonn,more

%O 0,5

%A Eli Ben-Naim (ebn(AT)lanl.gov), Sep 19 2002

%E Entry revised by _Sean A. Irvine_, Feb 20 2025