# A305710 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 11 4 53 5 297 6 1959 7 14499 8 120409 9 1097025 10 10931771 11 117685163 12 1363889133 13 16887554569 14 222672557631 15 3110742121059 16 45912214062961 17 713290136581697 18 11636755988405555 19 198800967493444875 20 3549276499518132325 21 66076184834921382313 22 1280502976522048458647