# A101653 (b-file synthesized from sequence entry) 0 1 1 4 2 16 3 32 4 128 5 256 6 512 7 2048 8 8192 9 16384 10 32768 11 131072 12 262144 13 1048576 14 4194304 15 8388608 16 33554432 17 67108864 18 134217728 19 536870912 20 1073741824 21 4294967296 22 17179869184 23 34359738368 24 68719476736 25 274877906944