105212domain: NAppears in sequencesNumber of Carmichael numbers (A002997) less than 10^n.at n=14A055553Number of (n+7)X10 0..1 matrices with each 8X8 subblock idempotent.at n=5A224592Number of (n+7)X13 0..1 matrices with each 8X8 subblock idempotent.at n=2A224595