# A057261 (b-file synthesized from sequence entry) 1 1 2 3 3 9 4 11 5 27 6 33 7 39 8 81 9 99 10 117 11 121 12 243 13 297 14 351 15 363 16 429 17 507 18 729 19 873 20 891 21 1053 22 1089 23 1287 24 1331 25 1521 26 1833 27 2187 28 2511 29 2673 30 3081 31 3159 32 3267 33 3861 34 3993 35 4491 36 4563 37 4719 38 4779 39 5577 40 6413 41 6561 42 6591 43 8019 44 9243 45 9477 46 9801