# A071857 (b-file synthesized from sequence entry) 1 1 2 6 3 16 4 32 5 279 6 726 7 4141 8 4368 9 54482 10 112572 11 366613 12 978019 13 5342223 14 41589964 15 201780051 16 353794663 17 408307432 18 463394050 19 676353989 20 866725306 21 999357112 22 3878963429 23 4169753024 24 8541140255 25 23422387081 26 26113359872 27 940995107440 28 1104573841707