FreeMarker Victimae Sernander OEIS ClustalW CVCV X174 Padovan equidistributed Blytt Clustal Dalgarno stratigraphically cQundd Chowla Pfam Kehte DNMT3a ultralimit laudes Ducci Zif268 biopolymer polyproteins lujvo biliteral exonic context chronostratigraphy polyA