# A011827 (b-file synthesized from sequence entry) 1 2 2 3 3 5 4 10 5 25 6 70 7 190 8 471 9 1060 10 2189 11 4203 12 7592 13 13027 14 21400 15 33868 16 51901 17 77334 18 112423 19 159905 20 223062 21 305789 22 412666 23 549034 24 721075 25 935896 26 1201617 27 1527463 28 1923860 29 2402535 30 2976620 31 3660760 32 4471225 33 5426026