# A124399 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 4 4 64 5 64 6 256 7 256 8 16384 9 16384 10 65536 11 65536 12 1048576 13 1048576 14 4194304 15 4194304 16 1073741824 17 1073741824 18 4294967296 19 4294967296 20 68719476736 21 68719476736 22 274877906944 23 274877906944 24 17592186044416 25 17592186044416