# A024739 (b-file synthesized from sequence entry) 1 2 2 1 3 2 4 4 5 8 6 16 7 40 8 96 9 224 10 528 11 1376 12 3520 13 8864 14 22272 15 59648 16 156992 17 407808 18 1060864 19 2872960 20 7701504 21 20460032 22 54299904 23 148601856 24 402977792 25 1084414464 26 2918055936 27 8035600384 28 21980652544 29 59769698304 30 162381037568 31 449715144704