# A148742 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 7 4 27 5 74 6 311 7 973 8 4225 9 14281 10 63741 11 226243 12 1028848 13 3789405 14 17450224 15 66115864 16 307457417 17 1190882793 18 5580880556 19 22007193489 20 103768034736 21 415307788212 22 1968152808212 23 7975987369231 24 37958127803864 25 155474827122061 26 742557291607324 27 3069658849260929 28 14705810083112145