23700

Appears in sequences

• Numbers k such that n | sigma_10(k) + phi(k)^10.at n=15A055704
• Enumeration of partial sums of 1 + [1,2] + [2,3] + [1,2] + [2,3] + ...at n=30A089640
• Number of transitive reflexive binary relations R on n labeled elements where max_{x}(|{y : xRy}|)=3.at n=6A135458
• Omit the initial 1 from A000141 and take the Mobius transform.at n=34A190622
• a(n) = (n^2 + 2*(Sum_{j = 1..n} j^n)) (mod n^3).at n=35A219540
• Irregular triangular array read by rows: T(n,k) is the number of inequivalent n X n {0,1} matrices modulo permutation of the rows, containing exactly k 1's; n>=0, 0<=k<=n^2.at n=44A220886
• Irregular triangular array read by rows: T(n,k) is the number of inequivalent n X n {0,1} matrices modulo permutation of the rows, containing exactly k 1's; n>=0, 0<=k<=n^2.at n=51A220886
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 377", based on the 5-celled von Neumann neighborhood.at n=31A271463
• Exponential (2,3)-perfect numbers: numbers m such that esigma(esigma(m)) = 3m, where esigma(m) is the sum of exponential divisors of m (A051377).at n=21A328132