81760

Appears in sequences

• Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.at n=10A033130
• Expansion of (1-x)/(1-2*x-2*x^2-3*x^3).at n=11A077842
• Smallest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.at n=14A126783
• Floor-Sqrt transform of Riordan numbers (A005043).at n=26A192671
• Expansion of Sum_{k>=2} x^Fibonacci(k)/(1 - x^Fibonacci(k)) / Product_{k>=2} (1 - x^Fibonacci(k)).at n=50A281689
• Number of compositions of n avoiding the patterns (1,2,3) and (3,2,1).at n=23A381981