A124657
Sequences linked to this entry ?
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A177267: Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having genus k (see first comment for definition of genus).
match row sums
5, 1 · 14, 10 · 42, 70, 8 · 132, 420, 168 … Σ 6, 24, 120, 720, 5040, 40320, 362880, …