# A293767 (b-file synthesized from sequence entry) 0 1 1 3 2 7 3 14 4 26 5 47 6 81 7 137 8 228 9 376 10 616 11 1006 12 1637 13 2659 14 4313 15 6990 16 11322 17 18332 18 29675 19 48029 20 77727 21 125780 22 203533 23 329340 24 532901 25 862270 26 1395201 27 2257502 28 3652735 29 5910270 30 9563039 31 15473344 32 25036419 33 40509800 34 65546257 35 106056096