# A197130 (b-file synthesized from sequence entry) 1 1 2 10 3 100 4 1136 5 14816 6 220032 7 3679488 8 68548608 9 1409347584 10 31717048320 11 775808778240 12 20499651624960 13 582040706088960 14 17674457139118080 15 571655258741145600 16 19621314364126003200 17 712374154997583052800 18 27277192770051951820800