# A036672 (b-file synthesized from sequence entry) 1 1 2 3 3 4 4 13 5 31 6 109 7 372 8 1446 9 5714 10 23791 11 100827 12 438019 13 1931818 14 8648820 15 39178079 16 179383748 17 828905252 18 3861958783 19 18125392905 20 85631735301 21 406977645228 22 1944737525915 23 9338989516911 24 45051405221284 25 218236995129380 26 1061256971559421