# A153909 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 10 4 29 5 170 6 866 7 8938 8 80759 9 1473212 10 23518209 11 758000366 12 21390884981 13 1218501715162 14 60770817102548 15 6118061305466866 16 539278173702963911 17 95952596838569547200 18 14947904300936965181323 19 4700556597989635565249354