87740

Appears in sequences

• Conjectured largest number that is not the sum of three generalized n-gonal numbers, or -1 if there is no largest number.at n=12A118282
• Conjectured largest number that is not the sum of three generalized (2n+1)-gonal numbers; bisection of A118282.at n=6A118284
• a(n) = n*(n+1)*(8*n + 1)/6.at n=40A132124