1391134

Appears in sequences

• Starting positions of strings of five 2's in the decimal expansion of Pi.at n=13A083608
• G.f.: (1-x+sqrt(1-2*x-3*x^2))/(1-3*x+x^2+x^3+(1-x^2)*sqrt(1-2*x-3*x^2)).at n=16A244886