# A138780 (b-file synthesized from sequence entry) 7 1 8 6 9 21 10 56 11 126 12 252 13 2 14 462 15 18 16 792 17 90 18 1287 19 330 20 2002 21 990 22 3003 23 2574 24 3 25 4368 26 6006 27 36 28 6188 29 12870 30 234 31 8568 32 25740 33 1092 34 11628 35 48620 36 4095 37 15504 38 87516 39 13104 40 4 41 20349 42 151164 43 37128 44 60