# A287804 (b-file synthesized from sequence entry) 0 1 1 5 2 17 3 59 4 205 5 713 6 2481 7 8635 8 30057 9 104629 10 364225 11 1267923 12 4413861 13 15365465 14 53490097 15 186209299 16 648230545 17 2256616133 18 7855718641 19 27347281995 20 95201200637 21 331413874569 22 1153716087665 23 4016309864843 24 13981555011321 25 48672509644725