# A077212 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 6 5 13 6 30 7 74 8 196 9 555 10 1666 11 5269 12 17476 13 60539 14 218277 15 816718 16 3163136 17 12652545 18 52167780 19 221329146 20 964751381 21 4314499339 22 19771519807 23 92736648099 24 444749340320 25 2178817894447 26 10894089472236 27 55549174801758