# A271611 (b-file synthesized from sequence entry) 1 1 2 3 3 17 4 114 5 240 6 2238 7 216318 8 5622392 9 20454036 10 970623228 11 1038614548176 12 131929454285752 13 1257138602103744 14 316487245419538728 15 3147612978951707912144 16 2069163709506683013857472 17 63184698521304672890081520 18 85953148896748583125564477008