5266800

Appears in sequences

• Highly abundant numbers (A002093) that are not Harshad numbers (A005349).at n=21A128702
• a(n) is the least number such that there are n semiprimes pq such that (p+1)(q+1) = a(n) for each semiprime.at n=28A180334
• Record values in partial LCM-products (A233287) of Fibonacci entry points (A001177).at n=10A233283
• Number of n-colorings of the vertices of the 4-dimensional cross polytope such that no two adjacent vertices have the same color.at n=10A334281
• Triangle read by rows: T(n, k) = 2^n*Sum_{j=0..k} (-1)^(k - j)*binomial(k, j)* Pochhammer(j/2, n).at n=41A371025
• Let D(k) = {d(k,i)}, i = 1,2,...,q be the set of q divisors of an integer k. a(n) is the smallest number k such that there exist exactly n distinct integers M, 1 < M <= k, where each set D(k) mod M = {0,1,2,...,M-1}.at n=31A379647