4322240domain: NAppears in sequencesNumbers k such that k and k+1 are both divisible by the number of their divisors over the Gaussian integers.at n=5A351852Numbers k such that A060778(k) = 7.at n=2A364903Numbers k such that k | A377484(k) and (k+1) | A377484(k+1).at n=17A377949