# A147070 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 1 7 3 8 9 9 19 10 61 11 211 12 741 13 3813 14 22505 15 147447 16 1175399 17 10583799 18 109540847 19 1364336983 20 19785643957 21 336137809321 22 6744593577357 23 157257981066897