1531152
domain: N
Appears in sequences
- Numbers m = concat(s,t) such that m = sigma(s) * sigma(t), where sigma(x) is the sum of the divisors of x.at n=6A253824
- Numbers n = concat(s,t) such that n = sigma(s*t), where sigma(x) is the sum of the divisors of x.at n=8A260097
- Table read by rows: T(n, k) = (-1)^(n-k)*F(n, k)/k!, where F are the Faulhaber numbers A354042.at n=40A354043