2233441domain: NAppears in sequencesPoulet numbers (2-pseudoprimes) of the form 7200*n^2 + 8820*n + 2701.at n=11A214016Pyramidal centered square numbers.at n=32A237516Fermat pseudoprimes to base 2 that are triangular.at n=30A293622Fermat pseudoprimes to base 2 that are hexagonal.at n=29A322130