# A117961 (b-file synthesized from sequence entry) 1 6 2 15 3 45 4 91 5 231 6 325 7 561 8 703 9 1035 10 1653 11 1891 12 2701 13 3321 14 3655 15 4371 16 5565 17 6903 18 7381 19 8911 20 10011 21 10585 22 12403 23 13695 24 15753 25 18721 26 20301 27 21115 28 22791 29 23653 30 25425 31 32131 32 34191 33 37401 34 38503 35 44253 36 45451 37 49141 38 52975 39 55611