# A107381 (b-file synthesized from sequence entry) 0 4 1 3 2 9 3 17 4 40 5 92 6 215 7 506 8 1200 9 2861 10 6848 11 16436 12 39523 13 95162 14 229328 15 552977 16 1333920 17 3218612 18 7767575 19 18747986 20 45254200 21 109241261 22 263712248 23 636626156 24 1536900483 25 3710323442