# A336009 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 1 5 2 6 4 7 8 8 16 9 34 10 82 11 226 12 678 13 2108 14 6892 15 23948 16 88532 17 344816 18 1401200 19 5925000 20 26146360 21 120743496 22 582606552 23 2926675112 24 15259183112 25 82458502624 26 461577781968 27 2674216518016 28 16013654472352 29 98968416103968 30 630595248710144