# A153898 (b-file synthesized from sequence entry) 0 1 1 2 2 1 3 2 4 4 5 4 6 4 7 20 8 12 9 32 10 92 11 128 12 192 13 1340 14 1080 15 3984 16 16104 17 31168 18 66032 19 644436 20 720896 21 3702816 22 20885084 23 56396000 24 167145024 25 2277052636 26 3551548720 27 25448231520 28 200265789844 29 754613710528 30 3122443069456