# A059145 (b-file synthesized from sequence entry) 0 15 1 54 2 141 3 324 4 699 5 1458 6 2985 7 6048 8 12183 9 24462 10 49029 11 98172 12 196467 13 393066 14 786273 15 1572696 16 3145551 17 6291270 18 12582717 19 25165620 20 50331435 21 100663074 22 201326361 23 402652944 24 805306119 25 1610612478 26 3221225205 27 6442450668 28 12884901603 29 25769803482