# A071913 (b-file synthesized from sequence entry) 1 1 2 4 3 9 4 27 5 81 6 256 7 1024 8 4096 9 16384 10 78125 11 390625 12 1953125 13 10077696 14 60466176 15 362797056 16 2176782336 17 13841287201 18 96889010407 19 678223072849 20 4747561509943 21 35184372088832 22 281474976710656 23 2251799813685248