# A005392 (b-file synthesized from sequence entry) 0 3 1 12 2 15 3 -36 4 -138 5 276 6 4326 7 21204 8 65274 9 126204 10 204246 11 1267356 12 10235538 13 54791316 14 212311746 15 678889380 16 4946455134 17 20113372464