600514560domain: NAppears in sequencesPermanent of the n-th principal submatrix of A204269.at n=15A204422Permanent of the n-th principal submatrix of A204545.at n=16A204546Permanent of the n-th principal submatrix of A204547.at n=15A204548Permanent of the n-th principal submatrix of A204549.at n=15A204550