# A038533 (b-file synthesized from sequence entry) 0 2 1 8 2 128 3 512 4 32768 5 131072 6 2097152 7 8388608 8 2147483648 9 8589934592 10 137438953472 11 549755813888 12 35184372088832 13 140737488355328 14 2251799813685248 15 9007199254740992 16 9223372036854775808 17 36893488147419103232 18 590295810358705651712 19 2361183241434822606848