# A148442 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 6 4 16 5 46 6 155 7 501 8 1686 9 5991 10 21017 11 76040 12 280654 13 1035640 14 3896052 15 14780804 16 56362934 17 217403028 18 842891300 19 3286540585 20 12904895803 21 50886586718 22 201628355072 23 802775113349 24 3207600418058 25 12866424867935 26 51798254861305 27 209156221493593 28 847252559115452 29 3441859987736618