292005

Appears in sequences

• Numbers n such that phi(n) = (phi(n+1) + phi(n-1))/2.at n=3A066167
• a(n) is equal to the n-th order Taylor polynomial (centered at 0) of G(x)^n evaluated at x = 1, where G(x) = (1 - 3*x - sqrt(1 - 10*x + 9*x^2))/(2*x) is the g.f. of A082298.at n=5A372215