# A165325 (b-file synthesized from sequence entry) 2 2 3 6 4 18 5 6 6 48 7 66 8 6 9 126 10 402 11 186 12 6 13 306 14 2028 15 2232 16 468 17 6 18 738 19 8790 20 19426 21 10212 22 1098 23 6