# A045900 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 25 5 85 6 318 7 1234 8 4884 9 19458 10 77727 11 310761 12 1242853 13 4971151 14 19884270 15 79536639 16 318145993 17 1272583241 18 5090332042 19 20361326983 20 81445306447 21 325781223902 22 1303124893253 23 5212499570050 24 20849998276525 25 83399993101506 26 333599972400353