# A025537 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 17 4 35 5 181 6 182 7 1278 8 2559 9 7687 10 7688 11 84580 12 84581 13 1099567 14 1099582 15 1099590 16 2199181 17 37386095 18 37386096 19 710335844 20 710335865 21 710335887 22 710335888 23 16337725448 24 16337725453 25 81688627291 26 81688627300 27 245065881928 28 245065881929