# A190297 (b-file synthesized from sequence entry) 1 1 2 12 3 57 4 245 5 1005 6 4063 7 16327 8 65435 9 261965 10 1048259 11 4193742 12 16776218 13 67107091 14 268432305 15 1073736223 16 4294957340 17 17179851485 18 68719445272 19 274877851009 20 1099511528337 21 4398046334325 22 17592185730143 23 70368743618958 24 281474975717403 25 1125899905076842