# A019161 (b-file synthesized from sequence entry) 3 0 4 0 5 4 6 6 7 8 8 30 9 59 10 110 11 307 12 702 13 1467 14 3540 15 8881 16 21238 17 51411 18 131267 19 336955 20 858389 21 2231616 22 5873842 23 15436593 24 40783461 25 108380373 26 288172019 27 767283935 28 2047446019 29 5468198458 30 14615722327 31 39109795012