# A173412 (b-file synthesized from sequence entry) 1 4 2 12 3 34 4 96 5 262 6 706 7 1866 8 4876 9 12590 10 32220 11 81780 12 206182 13 516682 14 1288100 15 3196414 16 7899664 17 19452002 18 47741832 19 116827972 20 285121530 21 694145540 22 1686165640 23 4087501476 24 9889956114 25 23887544730 26 57602999360 27 138696210062 28 333483756402 29 800784138674 30 1920539773188 31 4600776445384 32 11009534409116 33 26318680827474 34 62855267076802 35 149976974496002 36 357547693790338 37 851705230512838 38 2027255882196068