243804

Appears in sequences

• a(n) = 3^n-1+C(2n,n).at n=10A081670
• a(1)=1, a(n) = a(n-1) + n^5 if n odd, a(n) = a(n-1) + n^3 if n is even.at n=11A135099
• Number of length n+5 0..3 arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.at n=13A249080
• Number of length-5 0..n arrays with no repeated value equal to the previous repeated value.at n=10A269469
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 339", based on the 5-celled von Neumann neighborhood.at n=8A271290