# A001774 (b-file synthesized from sequence entry) 1 2 2 4 3 6 4 16 5 20 6 36 7 54 8 60 9 96 10 124 11 150 12 252 13 356 14 460 15 612 16 654 17 664 18 698 19 702 20 972 21 1188 22 1312 23 3062 24 4214 25 4288 26 5280 27 9100 28 20262 29 21676 30 24828 31 46144 32 62148 33 79974 34 117784 35 211464 36 310744 37 310754 38 429318 39 601158 40 605394