9511424

Appears in sequences

• a(n) = least k such that 1+2+3+...+k (k-th triangular number) is a multiple of n!; a(n) = least k such that A232096(k) >= n.at n=10A232097
• Numbers k such that both k and k+1 are nonunitary abundant numbers (A064597).at n=15A327942