# A112566 (b-file synthesized from sequence entry) 1 1 2 3 3 9 4 31 5 109 6 421 7 1585 8 5454 9 20681 10 80983 11 311221 12 1168531 13 4505761 14 17907735 15 69240865 16 272109736 17 1078430833 18 4147985381 19 16383884581 20 64335012378 21 234179431201 22 929947274509 23 3651532869601 24 14453209093051 25 56596999501225