# A007270 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 0 5 0 6 -3 7 0 8 0 9 0 10 -18 11 -18 12 42 13 0 14 -135 15 -270 16 477 17 648 18 -1980 19 -2988 20 4140 21 14052 22 -21690 23 -52920 24 55020 25 201852 26 -162774 27 -914538 28 555750 29 3229524 30 -1188327 31 -13301370 32 1402686 33 52334268 34 95751 35 -195398208 36 761838084 37 359664885 38 -2910516786 39 -1946958399 40 10681132140 41 10207745148 42 -40522674258