A075531 Number of gaps in the set of all possible values in the set X(n) given in A075529.
0, 0, 0, 1, 2, 3, 6, 10, 18, 28, 50, 79, 144, 249, 432, 756
Offset: 0
Examples
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.
Links
- E. Ben-Naim and P. L. Krapivsky, Growth and Structure of Stochastic Sequences, J. Phys. A (2002).
- E. Ben-Naim, Home page
Extensions
Entry revised by Sean A. Irvine, Feb 20 2025