# A108720 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 4 5 12 6 24 7 42 8 78 9 168 10 393 11 618 12 843 13 1068 14 1293 15 1518 16 1743 17 1968 18 2328 19 2688 20 3048 21 3408 22 3633 23 3858 24 4218 25 4578 26 4938 27 5514 28 5874 29 6234 30 6594 31 6954 32 7530 33 7890 34 8250 35 8610 36 8835 37 9195 38 9771 39 10347 40 10707 41 10932 42 11157 43 11382 44 11607 45 11832