9172942848

Appears in sequences

• a(n) = a(n-1)*a(n-2)*a(n-3)*a(n-4); for n < 5, a(n) = n.at n=7A000336
• Denominator of Product{prime(k)^2/(prime(k)^2 - 1) | 0<k<=n}, Numerator: A072044.at n=8A072045
• 3 people at a party are saying Hello to each other. Person 1 says Hello. Person 2 counts the times Hello has been said and says Hello twice that number. Person 3 says Hello 3 times the sum of Hello's and then it is Person 1 again. This is how many Hello's each person says.at n=22A076505
• Expansion of 2*x*(1+4*x+8*x^2)/(1-24*x^3).at n=21A076508
• Smallest number beginning with 9 and having exactly n prime divisors counted with multiplicity.at n=28A106429