# A049915 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 5 5 7 6 17 7 31 8 50 9 67 10 182 11 361 12 710 13 1387 14 2642 15 4756 16 7580 17 10222 18 28022 19 56041 20 112070 21 224107 22 448082 23 895636 24 1789340 25 3573742 26 7127042 27 14170036 28 28004060 29 54666862 30 103996022 31 187115026 32 298238090 33 402234112