114115

Appears in sequences

• Lucky numbers that are decimal concatenations of n with n + 1.at n=12A032651
• Centered 1729-gonal numbers.at n=11A130876
• 30-gonal pyramidal numbers: a(n) = n*(n+1)*(28*n-25)/6.at n=29A256650
• a(n) is the smallest positive integer which can be represented as the sum of n distinct nonzero tetrahedral numbers in exactly n ways, or -1 if no such integer exists.at n=36A360217