# A148298 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 13 5 36 6 112 7 350 8 1155 9 3925 10 13579 11 48220 12 173836 13 635911 14 2360420 15 8850743 16 33549545 17 128312974 18 494688957 19 1921574844 20 7512968389 21 29555315723 22 116910451943 23 464810687871 24 1856740321151 25 7448936153798 26 30004699108624 27 121312614191899 28 492189426529433 29 2003421447498019