# A083380 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 5 5 11 6 23 7 49 8 105 9 225 10 485 11 1045 12 2252 13 4852 14 10452 15 22517 16 48510 17 104508 18 225153 19 485075 20 1045058 21 2251505 22 4850716 23 10450546 24 22515012 25 48507117 26 104505409 27 225150073 28 485071123 29 1045054049 30 2251500692