2387797domain: NAppears in sequencesPoulet numbers (2-pseudoprimes) of the form 144*n^2 + 222*n + 85.at n=20A214017Composite numbers k congruent to 5 (mod 8) such that 2^((k-1)/2) mod k = k-1.at n=22A244626Fermat pseudoprimes to base 2 that are decagonal.at n=32A321870