# A115993 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 6 5 11 6 19 7 32 8 52 9 89 10 158 11 262 12 426 13 725 14 1287 15 2154 16 3498 17 5931 18 10485 19 17940 20 28965 21 48813 22 85775 23 150923 24 241735 25 404082 26 704598 27 1275594 28 2031915 29 3363953 30 5812312 31 10438620 32 17194101 33 28160524 34 48156310 35 85702564