# A298104 (b-file synthesized from sequence entry) 2 1 3 7 4 54 5 918 6 31072 7 2053184 8 266478640 9 68560228400 10 35159451505536 11 36021118923496320 12 73782296097354062336 13 302225812400352055040512 14 2475866621867539032536216576 15 40564755669895936890639118713856 16 1329227401230786888692092742930946048