# A175941 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 6 4 10 5 18 6 30 7 50 8 78 9 130 10 210 11 350 12 586 13 954 14 1606 15 2588 16 4234 17 6944 18 11342 19 18948 20 31450 21 52206 22 85662 23 141680 24 233040 25 385428 26 644910 27 1072074 28 1783342 29 2953094 30 4897922 31 8157096 32 13571014 33 22552212 34 37486916 35 62325564 36 103508754 37 172765524 38 287428656 39 479052200 40 798944976