91138

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 1, with a(0)=3, a(1)=10.at n=20A022409
• G.f.: Re(1/(1 + i*x/(1 + i*x^2/(1 + i*x^3/(1 + i*x^4/(1 + i*x^5/(1 + ...))))))), a continued fraction, where i is the imaginary unit.at n=42A293268
• Number of nX5 0..1 arrays with every element unequal to 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=7A316798