447040

Appears in sequences

• Decimal representation of the n-th iteration of the "Rule 99" elementary cellular automaton starting with a single ON (black) cell.at n=12A267128
• G.f.: Sum_{n>=0} (n+1)*(n+2)*(n+3)/3! * (x + x^n)^n.at n=49A325999
• Numbers whose numerator and denominator of their abundancy index are both Fibonacci numbers.at n=25A349687