# A025536 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 11 5 9 6 51 7 92 8 254 9 230 10 2305 11 2130 12 25755 13 24031 14 22519 15 42392 16 680708 17 644868 18 11639502 19 11085300 20 10581510 21 10121430 22 223092705 23 214169076 24 1029659598 25 991523962 26 2868336757 27 2769428662 28 77636319761 29 75131921865 30 2256305506455