83189

Appears in sequences

• a(n+1) = 2a(n)-a([n/2]) starting with a(0)=0 and a(1)=1.at n=19A062178
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0100-1100-0111-0010 pattern in any orientation.at n=16A147049
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 630", based on the 5-celled von Neumann neighborhood.at n=8A267268
• a(n) = 4*n^3 - 18*n^2 + 27*n - 12.at n=28A271828