46956

Appears in sequences

• a(n) = Sum_{d|6} phi(d)*n^(6/d).at n=6A054605
• a(n) = Sum_{d|n} phi(d)*6^(n/d).at n=6A054613
• Triangle T(n,k) = Sum_{d|n} phi(d)*k^(n/d).at n=20A054618
• Triangle T(n,k) = Sum_{d|k} phi(d)*n^(k/d).at n=20A054619
• Number of step shifted (decimated) sequences using a maximum of six different symbols.at n=6A056375
• Number of ways to label the vertices of the octahedron (or faces of the cube) with nonnegative integers summing to n, where labelings that differ only by rotation or reflection are considered the same.at n=44A097513
• Numbers k such that k^2 divides 5^k-1.at n=33A127105
• Expansion of 2*x*(6 + 5*x) / ((1 - x)*(1 - x - x^2)).at n=16A142245
• Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=5A207448
• Number of n X 6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=5A207451
• Number of 6 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=5A207457
• Sum of lengths of shortest runs with the same value over all s in {1,...,n}^n.at n=6A228618
• a(n) = Sum_{d|n} phi(d)*n^(n/d).at n=6A228640
• Numbers k such that (28*10^k - 31)/3 is prime.at n=22A293280
• Numbers k such that psi(k^2) = k, psi = A002322; indices of 1 in A341857.at n=39A341858