39378

Appears in sequences

• Numbers k such that phi(k) | sigma_8(k).at n=5A015766
• Number of words of length n (n >= 1) over a two-letter alphabet having a minimal period of size n-1.at n=16A019310
• Least number 2k such that p^2 divides the numerator of the Bernoulli number B(2k), where p is the n-th irregular prime, A000928(n).at n=17A092681
• Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UUU's (triplerises) (n >= 0; 0 <= k <= n-2 for n >= 2).at n=40A128719
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 0)}.at n=12A148054