60711

Appears in sequences

• a(n) = (n + 1)*(6*n^4 - 21*n^3 + 31*n^2 - 31*n + 30)/30.at n=13A267691
• Sum over all partitions of n of the LCM of the number of parts and the number of distinct parts.at n=26A339394
• a(n) = Sum_{k=1..n} (k/gcd(n, k))^4.at n=12A343514
• 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=30A360217