# A266799 (b-file synthesized from sequence entry) 0 1 1 1 2 49 3 229 4 1861 5 12001 6 84241 7 572209 8 3935569 9 26939221 10 184737301 11 1265964481 12 8677687969 13 59476087009 14 407659540081 15 2794128600901 16 19151272325221 17 131264694791329 18 899701808208049 19 6166647394567441 20 42266831441062801 21 289701168799073461