# A106606 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 23 5 66 6 199 7 601 8 1861 9 5815 10 18396 11 58684 12 188764 13 611103 14 1990361 15 6515786 16 21429510 17 70767468 18 234565319 19 780086526 20 2602209961 21 8704547698 22 29191435328 23 98125474137 24 330558122499 25 1115795428615 26 3773380090126 27 12782934685768 28 43374552366876