354079489

Appears in sequences

• Numbers k such that k and floor[k/3] are both squares; i.e., squares which remain squares when written in base 3 and last digit is removed.at n=9A055793
• G.f.: -(1-3*x^2-x^3)/(1+4*x-4*x^3-x^4).at n=15A097948
• Sin(arcsin(n)- 3 arccos(n))^2.at n=7A239609