# A018210 (b-file synthesized from sequence entry) 0 1 1 4 2 16 3 44 4 110 5 236 6 472 7 868 8 1519 9 2520 10 4032 11 6216 12 9324 13 13608 14 19440 15 27192 16 37389 17 50556 18 67408 19 88660 20 115258 21 148148 22 188552 23 237692 24 297115 25 368368 26 453376 27 554064 28 672792 29 811920 30 974304 31 1162800 32 1380825 33 1631796