# A014267 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 2 4 4 5 9 6 20 7 47 8 112 9 279 10 701 11 1794 12 4636 13 12130 14 31987 15 85062 16 227673 17 613126 18 1659712 19 4514249 20 12329670 21 33804673 22 93001852 23 256667215 24 710381240 25 1971312184 26 5483656721 27 15288227949 28 42711458197 29 119555284629 30 335253287132