# A003307 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 7 5 8 6 12 7 20 8 23 9 27 10 35 11 56 12 62 13 68 14 131 15 222 16 384 17 387 18 579 19 644 20 1772 21 3751 22 5270 23 6335 24 8544 25 9204 26 12312 27 18806 28 21114 29 49340 30 75551 31 90012 32 128295 33 143552 34 147488 35 1010743 36 1063844 37 1360104