# A259307 (b-file synthesized from sequence entry) 1 1 2 6 3 28 4 120 5 220 6 284 7 496 8 672 9 1184 10 1210 11 1560 12 1740 13 1980 14 2016 15 2556 16 2620 17 2924 18 5020 19 5564 20 6232 21 6368 22 7380 23 7776 24 8128 25 9180 26 9504 27 10744 28 10856 29 11556 30 12285 31 14595 32 17296 33 18416 34 19260 35 20448 36 20640 37 20664 38 21168 39 21384 40 21924 41 22200 42 22428 43 22752