# A249562 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 43 6 143 7 509 8 1921 9 7631 10 31725 11 137412 12 617822 13 2874819 14 13809305 15 68331089 16 347657464 17 1815839759 18 9722708061 19 53301771604 20 298854490602 21 1712023130016 22 10011533550216 23 59714205975048 24 363008132101658 25 2247599137530241 26 14164805684388087 27 90810818671081267 28 591921142070249872