# A107596 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 14 4 80 5 514 6 3567 7 26153 8 199900 9 1579107 10 12816020 11 106421359 12 901430144 13 7771535382 14 68085001080 15 605420138920 16 5459655601753 17 49904765136264 18 462228258349278 19 4337787743946224 20 41249375376404380 21 397572319756235577