1088391168
domain: N
Appears in sequences
- Denominator of sum of -12th powers of divisors of n.at n=5A017688
- Denominator of sum of -13th powers of divisors of n.at n=5A017690
- Ratios of successive terms are 3, 2, 3, 2, 3, 2, 3, 2, ...at n=23A026532
- a(n) = 6*a(n-2), starting with 1, 3, 9.at n=23A026565
- Expansion of exp(3*x)*cosh(3*x).at n=12A081341
- a(n)=Product{k=0..n, 1+2^A010060(k)}/2.at n=23A101652
- The order of the smallest solvable group with derived length n.at n=9A104114
- a(n) = 3*6^n.at n=11A169604
- Numbers k such that k^5 is sum of 2 nonzero 6th powers.at n=17A291826
- Base-6 complementary numbers: n equals the product of the 6 complement (6-d) of its base-6 digits d.at n=32A298976
- The total number of combinations for presenting the set of numbers 1 <= k <= sigma(n) as sums of distinct divisors of n.at n=11A307224
- 3-smooth numbers of the form (ab+1)(ac+1), a > b > c > 0.at n=9A320883
- Integers k such that for some m >= 0, psi(k) = rad(k)^m, where psi(k) = A001615(k) and rad(k) = A007947(k).at n=20A356420