# A291819 (b-file synthesized from sequence entry) 1 1 2 4 3 24 4 196 5 1944 6 21944 7 272080 8 3627412 9 51288200 10 761782104 11 11805102064 12 189901153112 13 3158767322992 14 54165347282960 15 955189096759776 16 17289056525343716 17 320678326091307448 18 6087009196570756488 19 118109764108446889008 20 2340448760238788518488 21 47324471620802426563376 22 975739573623235107473968 23 20500725692629852174532192 24 438679922664144046444438488 25 9555430871381022848971028208