# A026989 (b-file synthesized from sequence entry) 3 1 4 14 5 115 6 660 7 3805 8 20520 9 109779 10 551774 11 2921313 12 14482320 13 71576096 14 349292330 15 1804636693 16 8745745676 17 42107640345 18 203559063050 19 1040682784201 20 5002217935308 21 23823427871991 22 114772726273528 23 583453635620973 24 2795288971320092 25 13246283464422706 26 63736681240596050