165888

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=6A000336
• Denominator of sum of -4th powers of divisors of n.at n=23A017672
• Denominators in expansion of (1-x)^(-1/x)/e.at n=7A055535
• Product J_2(i), i=1..n.at n=5A059381
• a(n) = Sum_{k >= 0} 2^k * binomial(k+2,n-2*k).at n=21A061279
• a(n) = phi(binomial(2n, n)).at n=10A066973
• 15-almost primes (generalization of semiprimes).at n=7A069276
• 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=12A076505
• Expansion of x*(1+3*x+12*x^2)/(1-24*x^3).at n=11A076506
• Expansion of 3*x*(1-x)*(1+2*x+6*x^2)/(1-24*x^3).at n=11A076509
• Increasing gaps between 3-smooth numbers (lower end).at n=36A084789
• a(n) = n!/A093888(n).at n=14A093889
• Largest order of a solvable subgroup of the symmetric group S_n.at n=13A099732
• a(n) = n!/A102356(n).at n=18A102456
• The order of the smallest solvable group with derived length n.at n=8A104114
• Numbers of divisors associated with the entries of A120585.at n=19A120586
• Numbers k such that p=6k+1 is prime and cos(2*Pi/p) is an algebraic number of a 3-smooth degree, but not 2-smooth.at n=35A125867
• Product ceiling(n/1)*ceiling(n/2)*ceiling(n/3)*...*ceiling(n/n) (the 'ceiling factorial').at n=12A131385
• Delannoy paths counted by number of weak peaks.at n=52A133214
• a(n) = 12*a(n-2) for n > 2; a(1) = 1, a(2) = 8.at n=9A162466