# A028163 (b-file synthesized from sequence entry) 0 1 1 36 2 829 3 15576 4 260425 5 4039212 6 59479093 7 843439392 8 11625297409 9 156744987828 10 2076870835117 11 27134173366248 12 350447396932153 13 4483154549898684 14 56894676264296101 15 717171756670960944