# A103788 (b-file synthesized from sequence entry) 1 0 2 1 3 3 4 6 5 13 6 28 7 39 8 78 9 138 10 207 11 437 12 865 13 1423 14 2750 15 4904 16 8861 17 16201 18 33346 19 58534 20 111878 21 208914 22 397522