# A058822 (b-file synthesized from sequence entry) 0 1 1 7 2 28 3 231 4 1813 5 13447 6 98105 7 705895 8 5044501 9 35869911 10 254229409 11 1797569767 12 12687856601 13 89436009607 14 629778626473 15 4431057410423 16 31155872769301 17 218946366105607 18 1537946178052697 19 10798953333511399 20 75802652996855281 21 531948441984119239 22 3732101910100912537