# A027985 (b-file synthesized from sequence entry) 1 6 2 35 3 144 4 564 5 2186 6 8468 7 32856 8 127729 9 497454 10 1940525 11 7580656 12 29651385 13 116111194 14 455138499 15 1785707924 16 7011933544 17 27554583254 18 108355491404 19 426368213364 20 1678704356644 21 6613026412314 22 26064305550054 23 102777232982624