# A307800 (b-file synthesized from sequence entry) 0 1 1 3 2 11 3 37 4 153 5 551 6 2023 7 7701 8 29417 9 107083 10 384771 11 1408133 12 5457961 13 22466367 14 92977823 15 365613181 16 1342359393 17 4677908531 18 16159185307 19 58676063493 20 231520762361 21 967464685783 22 4052593703511 23 16354948948517 24 62709285045913 25 229276436653851