# A082125 (b-file synthesized from sequence entry) 0 4 1 3 2 4 3 2 4 4 5 8 6 16 7 64 8 512 9 16384 10 2097152 11 2147483648 12 140737488355328 13 1180591620717411303424 14 40564819207303340847894502572032 15 365375409332725729550921208179070754913983135744