# A101980 (b-file synthesized from sequence entry) 0 0 1 1 2 0 3 -1 4 4 5 0 6 4 7 -9 8 9 9 0 10 -33 11 64 12 -36 13 16 14 0 15 456 16 -825 17 400 18 -100 19 25 20 0 21 -9460 22 16416 23 -7425 24 1600 25 -225 26 36 27 0 28 274800 29 -463540 30 201096 31 -40425 32 4900 33 -441 34 49 35 0 36 -10643745 37 17587200 38 -7416640 39 1430016 40 -161700 41 12544 42 -784 43 64 44 0 45 530052880 46 -862143345 47 356140800 48 -66749760 49 7239456