# A078071 (b-file synthesized from sequence entry) 0 1 1 -3 2 4 3 -4 4 6 5 -12 6 20 7 -28 8 40 9 -64 10 104 11 -160 12 240 13 -368 14 576 15 -896 16 1376 17 -2112 18 3264 19 -5056 20 7808 21 -12032 22 18560 23 -28672 24 44288 25 -68352 26 105472 27 -162816 28 251392 29 -388096 30 599040 31 -924672 32 1427456 33 -2203648 34 3401728 35 -5251072 36 8105984 37 -12513280 38 19316736 39 -29818880 40 46030848