31794

Appears in sequences

• McKay-Thompson series of class 30B for the Monster group with a(0) = 0.at n=40A058613
• Number of permutations p of (1,2,3,...,n) such that sigma(1+p(1))+sigma(2+p(2))+...+sigma(n+p(n))=2*n^2.at n=9A073110
• Largest squarefree number dividing sum of cubes of divisors of n.at n=44A080238
• At stage 1, start with a unit equilateral triangle. At each successive stage add 3*(n-1) new triangles around outside with vertex-to-vertex contacts. Sequence gives number of triangles at n-th stage.at n=42A269064
• a(n) = n!*LaguerreL(n, n).at n=7A277423