# A163687 (b-file synthesized from sequence entry) 1 1 2 8 3 39 4 132 5 389 6 1095 7 3107 8 8790 9 24449 10 66724 11 179212 12 475169 13 1247181 14 3249223 15 8420475 16 21735923 17 55926076 18 143501956 19 367381497 20 938864371 21 2396062211 22 6108616160 23 15560958273