# A352151 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 14 4 81 5 616 6 5523 7 58064 8 697281 9 9417856 10 141368643 11 2334020864 12 42039523281 13 820296426496 14 17237259945363 15 388087200241664 16 9320064293358081 17 237814050877505536 18 6425096888209255683 19 183232685725482942464 20 5500505587921088841681