52520

Appears in sequences

• a(n) = n*(n+1)*(5*n+7)/6.at n=39A162148
• Number of graphs with n nodes that are chordal and planar.at n=9A243787
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 245", based on the 5-celled von Neumann neighborhood.at n=41A271006
• Numbers x such that sigma(x) = sigma(y), with x<>y, where y is the 10's complement mod 10 of the digits of x.at n=23A300447