# A071706 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 5 4 21 5 69 6 319 7 1957 8 12513 9 85445 10 656771 11 5591277 12 51531405 13 509874417 14 5438826975 15 62000480093 16 752464463029 17 9685138399785 18 131777883431119