# A056037 (b-file synthesized from sequence entry) 6 1 7 2 8 15 9 69 10 288 11 840 12 2144 13 4488 14 8317 15 13160 16 18636 17 23078 18 25856 19 25623 20 23187 21 18713 22 13932 23 9288 24 5816 25 3256 26 1767 27 858 28 419 29 180 30 88 31 34 32 16 33 6 34 3 35 1 36 1