# A088906 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 6 4 10 5 72 6 4097 7 8192 8 16777217 9 33554432 10 137438953472 11 562949953421312 12 1152921504606846977 13 2305843009213693952 14 1329227995784915874056728564887191552 15 22300745198530623141535718272648361505980417