# A003822 (b-file synthesized from sequence entry) 3 10 4 42 5 167 6 662 7 2670 8 10846 9 44199 10 180438 11 737762 12 3021000 13 12387990 14 50864885 15 209095841 16 860447494 17 3544046278 18 14608974346 19 60261567146 20 248726602105 21 1027143932653 22 4243640251368 23 17539577253151 24 72518982292559 25 299928724501455