# A028491 (b-file synthesized from sequence entry) 1 3 2 7 3 13 4 71 5 103 6 541 7 1091 8 1367 9 1627 10 4177 11 9011 12 9551 13 36913 14 43063 15 49681 16 57917 17 483611 18 877843 19 2215303 20 2704981 21 3598867 22 7973131 23 8530117