# A148930 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 9 4 27 5 101 6 363 7 1293 8 5243 9 20337 10 78015 11 328693 12 1331243 13 5327113 14 22958959 15 95597169 16 393249551 17 1720773845 18 7304282483 19 30640477305 20 135557193295 21 583622065549 22 2484292677355 23 11083227727345 24 48239528082663 25 207689517370853 26 932727182731379 27 4094889279286841 28 17791453051272735