78155

Appears in sequences

• Sums of 3 distinct powers of 5.at n=37A038475
• Numbers k such that phi(k) is equal to A008473(k+1).at n=15A039781
• a(n) = Sum_{d|7} phi(d)*n^(7/d).at n=5A054606
• a(n) = Sum_{d|n} phi(d)*5^(n/d).at n=7A054612
• Triangle T(n,k) = Sum_{d|n} phi(d)*k^(n/d).at n=25A054618
• A diagonal of A008296.at n=27A059302
• Frobenius number of the numerical semigroup generated by three consecutive hexagonal numbers.at n=22A069758
• Numbers m such that greatest prime divisor of (m-th prime + 1) is 3.at n=35A121820
• 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, 1), (1, 1, -1)}.at n=10A148746
• Number of nX3 0..5 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=11A201137
• Growth series for affine Coxeter group B_10.at n=9A267173
• Occurrences of decrease of the probability density P(n) of coprime numbers k,m, satisfying 1 <= k <= a(n) and 1 <= m <= a(n), and a(n) congruent to 1 (mod 2) and a(n) not congruent to 3 (mod 6).at n=30A280879
• Odd numbers k that can be factored to such a pair of coprime factors x and y that A347381(k) < min(A347381(x), A347381(y)).at n=33A347390
• Positions of 4's in A347381.at n=55A347394
• Numbers k such that k and k+1 have the same sum of powerful divisors (A183097) and this sum is larger than 1.at n=21A349063