# A148512 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 5 4 17 5 36 6 128 7 327 8 1170 9 3455 10 12262 11 40081 12 142049 13 495130 14 1772625 15 6418214 16 23385253 17 86616111 18 321736427 19 1210203620 20 4573329384 21 17419545738 22 66751989887 23 257123568873 24 996294459849 25 3876599461115 26 15158851798617 27 59508213689256 28 234538307571314 29 927776682371497 30 3682212368039974