# A149518 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 11 4 49 5 157 6 669 7 2359 8 10469 9 38031 10 171947 11 654365 12 2963317 13 11615139 14 53048663 15 211305971 16 971575373 17 3937700723 18 18158329543 19 74598316371 20 345340823051 21 1432498112841 22 6653892360649 23 27858328150673 24 129689043036749 25 547253347884923 26 2553540861061331 27 10843856927588551