55964

Appears in sequences

• Numbers n such that sigma(n+1) = 2*sigma(n-1).at n=7A067134
• Number of ordered quadruples (i,j,k,l) in range [0..n] satisfying i == j (mod 2), j == k (mod 3) and k == l (mod 4).at n=33A115523
• Dimension of 5-variable non-commutative harmonics (twisted derivative). The dimension of the space of non-commutative polynomials in 5 variables which are killed by all symmetric differential operators (where for a monomial w, d_{xi} ( xi w ) = w and d_{xi} ( xj w ) = 0 for i/=j).at n=7A122369
• Number of nX3 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX3 array.at n=9A219847
• Numbers n such that the n-th prime equals the n-th Ramanujan prime of the totient of n.at n=10A267012
• Numbers k such that the sum of the divisors of k is of the form m^3 + 1.at n=40A289384