42809

Appears in sequences

• a(n) = 3 + floor((2 + Sum_{j=1..n-1} a(j))/3).at n=33A120150
• Number of nonnegative integer arrays of length n+3 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 2.at n=9A211842
• Number of 6 X n 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of the elements above it, modulo 3.at n=7A239033
• Number of subsets of {1..n} with all distinct lengths of maximal anti-runs (increasing by more than 1).at n=18A384177