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A151629
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Number of permutations of 2 indistinguishable copies of 1..n with exactly 7 adjacent element pairs in decreasing order.
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2
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0, 0, 0, 0, 232, 450048, 163809288, 27306899520, 2898916824320, 230479103253264, 15045786224718576, 853790829031070016, 43726349865720132216, 2073954076439134340896, 92786533933117718314680, 3968339124661862533557120, 163867469809854783921566544
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