# A064888 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 23 5 323 6 647 7 971 8 7121 9 6943 10 185147 11 363173 12 179407463 13 412637165 14 20631858251 15 140035237 16 3716297449 17 27822060851939 18 2853544702763 19 58823785801243 20 568431869527163 21 279209361758899949 22 4944838261875010691