# A297183 (b-file synthesized from sequence entry) 0 0 1 0 2 2 3 4 4 10 5 20 6 44 7 92 8 194 9 396 10 820 11 1684 12 3432 13 6972 14 14144 15 28636 16 57890 17 116828 18 235500 19 474304 20 954444 21 1919364 22 3857548 23 7748888 24 15558988 25 31229384 26 62662088 27 125696800 28 252079196 29 505423476 30 1013189208 31 2030729700 32 4069562810 33 8154257184 34 16336840080 35 32726819744 36 65553540096