# A156392 (b-file synthesized from sequence entry) 0 1 1 20 2 132 3 294 4 440 5 270 6 1414 7 635 8 1716 9 2096 10 5108 11 9108 12 3066 13 3096 14 9216 15 2952 16 9131 17 8172 18 21624 19 39000 20 31638 21 11364 22 31206 23 14100 24 32236 25 18704 26 64560 27 102762 28 51947 29 50136 30 38544 31 49526 32 74688 33 37944 34 138156 35 259560 36 175374 37 76680 38 182640