# A007135 (b-file synthesized from sequence entry) 1 0 2 1 3 1 4 4 5 6 6 15 7 30 8 74 9 160 10 379 11 867 12 2057 13 4817 14 11465 15 27214 16 65102 17 155753 18 374208 19 900073 20 2170500 21 5240723 22 12676162 23 30697119 24 74435204 25 180679171