# A075614 (b-file synthesized from sequence entry) 1 4 2 16 3 64 4 256 5 1024 6 4096 7 20480 8 98304 9 458752 10 2097152 11 9437184 12 41943040 13 188743680 14 922746880 15 4429185024 16 20937965568 17 97710505984 18 450971566080 19 2061584302080 20 9620726743040 21 46729244180480 22 224300372066304