# A019208 (b-file synthesized from sequence entry) 3 0 4 1 5 5 6 4 7 7 8 28 9 56 10 89 11 277 12 719 13 1443 14 3469 15 9359 16 21650 17 51596 18 135156 19 337846 20 839063 21 2173763 22 5618513 23 14449877 24 37718711 25 99072109 26 260146125 27 686218682 28 1818312665 29 4824702901 30 12822871344 31 34160124755