# A128850 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 6 4 7 5 13 6 33 7 46 8 79 9 204 10 283 11 487 12 770 13 1257 14 22139 15 23396 16 45535 17 68931 18 183397 19 252328 20 940381 21 3073471 22 7087323 23 24335440 24 153099963 25 330535366 26 3458453623 27 3788988989 28 7247442612 29 11036431601 30 29320305814 31 274919183927