# A073927 (b-file synthesized from sequence entry) 1 2 2 9 3 8 4 160000 5 7962624 6 191102976 7 34359738368 8 256 9 692533995824480256 10 604661760000000000 11 743008370688 12 149587343098087735296 13 2316779994178213904384 14 268435456 15 30517578125000000000000000