# A069740 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 4 6 1 7 64 8 4 9 65536 10 512 11 33554432 12 65536 13 68719476736 14 6442450944 15 9007199254740992 16 281474976710656 17 220326730624766167090200576 18 340010386766614455386112 19 486777830487640090174734030864384