181398528

Appears in sequences

• Ratios of successive terms are 3, 2, 3, 2, 3, 2, 3, 2, ...at n=21A026532
• a(n) = 6*a(n-2), starting with 1, 3, 9.at n=21A026565
• Smallest k such that n*k is an n-th power.at n=11A076930
• Expansion of exp(3*x)*cosh(3*x).at n=11A081341
• a(n)=Product{k=0..n, 1+2^A010060(k)}/2.at n=21A101652
• a(n) = ceiling(6^n/n).at n=11A129790
• a(n) = floor(6^n/n).at n=11A129796
• Denominator of Euler(n, 1/6).at n=11A156189
• Denominator of Bernoulli(n, 1/6).at n=11A158077
• a(n) = 3*6^n.at n=10A169604
• Expansion of 36*x^2*(1+36*x^2-6*x) / ((36*x^2+6*x+1)*(1-6*x)^2).at n=9A181635
• Expansion of 36*x^2*(1+6*x-36*x^2) / ( (1-6*x)^2 *(1+6*x+36*x^2) ).at n=9A181685
• Base-6 complementary numbers: n equals the product of the 6 complement (6-d) of its base-6 digits d.at n=29A298976
• 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=17A356420