# A049965 (b-file synthesized from sequence entry) 1 1 2 3 3 1 4 8 5 14 6 35 7 63 8 128 9 254 10 635 11 1205 12 2382 13 4743 14 9480 15 18953 16 37908 17 75814 18 189535 19 360115 20 710757 21 1416777 22 2831193 23 5661209 24 11321848 25 22643315 26 45286504 27 90572943 28 181145858 29 362291695 30 724583384 31 1449166761