# A155174 (b-file synthesized from sequence entry) 1 4 2 12 3 112 4 220 5 840 6 1740 7 3960 8 5100 9 8580 10 9940 11 11704 12 12012 13 20604 14 21840 15 23112 16 26680 17 47740 18 61600 19 78012 20 82012 21 102604 22 103512 23 122512 24 151800 25 276024 26 289560 27 340312 28 418612 29 481180 30 501000 31 660100 32 711624 33 838512 34 901824 35 931612