2881200

Appears in sequences

• Let T(n) = n(n+1)/2 be the n-th triangular number (A000217); a(n) = T(8T(n)).at n=24A185096
• Triangular numbers representable as 3 * x^2.at n=4A226500
• Triangular numbers that are the sum of 2 consecutive terms of A130518.at n=11A247247
• Triangular numbers that are the product of a triangular number and a square number (both greater than 1).at n=25A253650
• The area of the n-th convex honeycomb formed by spirals of incrementing strips of hexagons.at n=16A373081