5971968

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*12^j.at n=26A038242
• Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*4^j.at n=22A038330
• Numbers n such that A017666(n)=phi(n).at n=26A069058
• 19-almost primes (generalization of semiprimes).at n=22A069280
• Expansion of 3*(1+2*x+6 x^2)/(1-24*x^3).at n=14A076510
• Number of divisors of A104350(n).at n=39A104352
• Bhaskara twins: n such that 2*n^2 = X^3 and 2*n^3 = Y^2.at n=11A106318
• a(n) = Product_{i=1..n} psi(i) where psi is the Dedekind psi function (A001615).at n=8A175836
• Mix A001021, 2*A001021.at n=13A176710
• Numbers that are the sum of two powers of 12.at n=27A194887
• Numbers m for which Sum_{i=1..k} (1+1/p_i) + Product_{i=1..k} (1+1/p_i) is an integer, where p_i are the k prime factors of m (with multiplicity).at n=31A199767
• Composite numbers such that Sum_{i=1..k} (1 + 1/p_i) - Product_{i=1..k} (1 + 1/p_i) is an integer, where p_i are the k prime factors of n (with multiplicity).at n=18A226365
• Ordered union of the sets {h^6, h >=1} and {2*k^6, k >=1}.at n=24A249073
• Let S_k denote the sequence of numbers j such that A001222(j) - A001221(j) = k. Then a(n) is the n-th term of S_n.at n=16A261256
• Numbers with 7 odd divisors.at n=31A267697
• Denominators of poly-Bernoulli numbers B_n^(k) with k=7.at n=3A283926
• 2-highly composite numbers: 3-smooth numbers (A003586) k with d(k) > d(j) for all 3-smooth numbers j < k, where d(k) is the number of divisors of k (A000005).at n=41A309015
• a(n) = Product_{i=1..n} i^s(n,i), where s is an unsigned Stirling number of the 1st kind.at n=4A319761
• Terms of A025487 from which the distance to the next larger prime is a composite number.at n=8A329894
• Numbers k such that the Diophantine equation x^3 + y^3 + 2*z^3 = k has nontrivial primitive parametric solutions.at n=17A338933