# A139256 (b-file synthesized from sequence entry) 1 12 2 56 3 992 4 16256 5 67100672 6 17179738112 7 274877382656 8 4611686016279904256 9 5316911983139663489309385231907684352 10 383123885216472214589586756168607276261994643096338432