126378

Appears in sequences

• a(n) = 15*2^n + 6*4^n + 10*3^n + 3*5^n + 6^n + 21.at n=6A254463
• Third partial sums of sixth powers (A001014).at n=5A254640
• a(n) = Sum_{m=1..n} (Sum_{k=1..m} (Sum_{j=1..k} j^n)).at n=5A349116