353640

Appears in sequences

• Arithmetic progression of at least 5 terms having the same value of phi start at these numbers.at n=0A050515
• a(1)=9, a(n_even)=(a(n-1)^2-1)/2; a(n_odd)=a(n-1)+1.at n=5A076603
• Number of compositions of odd natural numbers into 4 parts <= n.at n=28A191903
• E.g.f. satisfies log(A(x)) = (1 - exp(-2*x)) * A(x)/2.at n=9A355789
• Length of the long leg in the unique primitive Pythagorean triple whose inradius is A002378(n) and such that its long leg and its hypotenuse are consecutive natural numbers.at n=20A384288