-5473

Appears in sequences

• a(n) = -(n + 1)*(2*n^2 + n - 12)/6.at n=25A058372
• Negative of the Hankel transform of C(n) - C(n+2), where C = A000108.at n=8A138268
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 283", based on the 5-celled von Neumann neighborhood.at n=39A271120
• a(n) = floor(c*r*a(n-1)) - floor(d*s*a(n-2)), where r = (1+sqrt(5))/2, s = r/(r-1), c = 1, d = 1, a(0) = 1, a(1) = 1.at n=20A275858