# A125962 (b-file synthesized from sequence entry) 0 0 1 5 2 50 3 455 4 4100 5 36905 6 332150 7 2989355 8 26904200 9 242137805 10 2179240250 11 19613162255 12 176518460300 13 1588666142705 14 14297995284350 15 128681957559155 16 1158137618032400 17 10423238562291605 18 93809147060624450 19 844282323545620055 20 7598540911910580500