# A085422 (b-file synthesized from sequence entry) 0 -1 1 2 2 4 3 13 4 40 5 125 6 392 7 1231 8 3867 9 12148 10 38164 11 119895 12 376661 13 1183315 14 3717493 15 11678848 16 36690183 17 115265609 18 362117590 19 1137625960 20 3573957358 21 11227918180 22 35273545269 23 110815110683 24 348135937628 25 1093701304102