# A067651 (b-file synthesized from sequence entry) 1 1 2 7 3 19 4 47 5 115 6 177 7 280 8 297 9 340 10 406 11 470 12 930 13 1240 14 1608 15 1836 16 2232 17 2380 18 2484 19 4326 20 8360 21 33864 22 166152 23 216216 24 220248 25 299250 26 394500