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A037959
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(n+2)!*n^2*(n+1)/48.
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0
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6, 90, 1200, 15750, 211680, 2963520, 43545600, 673596000, 10977120000, 188367379200, 3399953356800, 64457449056000, 1281520880640000, 26676557107200000, 580481882652672000, 13183287756807168000
(list;
graph;
refs;
listen;
history;
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internal format)
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