638000

Appears in sequences

• a(n) is the smallest positive integer such that d(a(n))*d(a(n)+1) > d(a(n-1))*d(a(n-1)+1), where d(m) is the number of divisors of m and n > 1; a(1) = 1.at n=38A123000
• Numbers k such that k | A020696(k) and (k+1) | A020696(k+1).at n=6A355332
• Numbers k such that k | A377484(k) and (k+1) | A377484(k+1).at n=4A377949
• Numbers k such that k | A378053(k) and (k+1) | A378053(k+1).at n=0A378055