2078375

Appears in sequences

• a(n) = (k-n+1)^n + (k-n+2)^n + ... + (k-1)^n + k^n, where k = n(n+1)/2.at n=4A069876
• Sum of next n 5th powers.at n=4A075666
• Duplicate of A069876.at n=4A075672