20137

Appears in sequences

• Super-5 Numbers (5 * n^5 contains substring '55555' in its decimal expansion).at n=5A032745
• Sum of n-th antidiagonal of array in A082002.at n=26A082005
• Sum of first n 6-almost primes.at n=35A086052
• Exponentiation of A132841.at n=29A132842
• Numbers m such that 4^(m-1) == 1 (mod (m-1)^2 + 1).at n=8A273870
• Numbers k such that (29*10^k - 77)/3 is prime.at n=23A280942
• Take apart the sides of each of the integer-sided scalene triangles with perimeter n (at their vertices) and rearrange them orthogonally in 3-space so that their endpoints coincide at a single point. a(n) is the total volume of all rectangular prisms enclosed in this way.at n=32A308234
• Numbers k such that 24*k-1 has at least three factors 7 and the partition function evaluated at k has at least the same number of factors 7 as 24*k-1.at n=24A340957
• Number of solid standard Young tableaux with n cells, height <= 2, and depth <= 2.at n=10A384725