# A055841 (b-file synthesized from sequence entry) 0 1 1 2 2 9 3 36 4 144 5 576 6 2304 7 9216 8 36864 9 147456 10 589824 11 2359296 12 9437184 13 37748736 14 150994944 15 603979776 16 2415919104 17 9663676416 18 38654705664 19 154618822656 20 618475290624 21 2473901162496 22 9895604649984 23 39582418599936 24 158329674399744 25 633318697598976 26 2533274790395904 27 10133099161583616 28 40532396646334464 29 162129586585337856 30 648518346341351424