References to A061564

Numbers n such that the repeating part of the decimal expansion of 1/n (omitting leading or trailing zeros) forms a prime number.
3, 12, 18, 27, 30, 33, 36, 45, 48, 75, 120, 180, 192, 198, 270, 277, 288, 300, 330, 333

2 seqfan posts