-523

Appears in sequences

• Matrix inverse of triangle A055898.at n=50A055905
• Expansion of (1-x)^(-1)/(1-x+x^3).at n=42A077869
• Expansion of 1/(x^11 + x^10 + x^6 + x^5 + x^4 + x^2 + 1).at n=54A157746
• Partial sums of A050935.at n=44A203400
• a(n) = Sum_{k=0..n} (-1)^k*F(k)*F(k+3), where F=A000045 (Fibonacci numbers).at n=7A214885
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 1", based on the 5-celled von Neumann neighborhood.at n=11A269909
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 413", based on the 5-celled von Neumann neighborhood.at n=11A272010
• a(n) = -n^3 + 70*n^2 - 939*n + 2393.at n=12A279538
• Expansion of 1/(1 + x + x^2 + x^3/(1 + x^4 + x^5 + x^6/(1 + x^7 + x^8 + x^9/(1 + ...)))), a continued fraction.at n=61A292869
• a(n) = 1 + Sum_{k=2..n} (-1)^k * k * a(floor(n/k)).at n=54A361982