84883

Appears in sequences

• Number of nodes in regular n-gon with all diagonals drawn.at n=41A007569
• a(n) = (7^(n+1) - (-6)^(n+1))/13.at n=6A065874
• Main diagonal of the square array A081297.at n=6A081298
• Numerators of partial sums of a convergent series with value 4, involving scaled Catalan numbers A000108.at n=8A119951
• Expansion of Product_{n>=1} (1 - x^(3*n))/(1 - x^n)^2 in powers of x.at n=26A278690