# A126410 (b-file synthesized from sequence entry) 0 1 1 23 2 109 3 525 4 2543 5 12361 6 60223 7 293899 8 1436105 9 7024405 10 34386235 11 168441635 12 825574805 13 4048257077 14 19858855181 15 97451838245 16 478360096877 17 2348721744139 18 11534669029037 19 56658230250101 20 278351957108055