# A019167 (b-file synthesized from sequence entry) 3 0 4 0 5 6 6 5 7 7 8 35 9 57 10 107 11 322 12 660 13 1430 14 3576 15 8424 16 20414 17 50587 18 126317 19 325163 20 836308 21 2160569 22 5689990 23 15010004 24 39609681 25 105287045 26 280362602 27 746474009 28 1992061356 29 5322307432 30 14224337143 31 38055181243