# A152172 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 6 5 12 6 26 7 59 8 138 9 332 10 814 11 2028 12 5118 13 13054 14 33598 15 87143 16 227542 17 597640 18 1577866 19 4185108 20 11146570 21 29798682 22 79932298 23 215072896 24 580327122 25 1569942098 26 4257254850 27 11569980794 28 31508150890 29 85968266198 30 234975421554 31 643317390627