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Search: id:A157221
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| A157221 |
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A Eulerian tent triangle sequence: tent function: f(n,m)=If[k <= Floor[n/2], k, n - k]; t(n,m)=Eulerian[n*f[n, m], f[n, m]]. |
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| 1, 1, 1, 1, 4, 1, 1, 11, 11, 1, 1, 26, 14608, 26, 1, 1, 57, 152637, 152637, 57, 1, 1, 120, 1479726, 251732291184, 1479726, 120, 1, 1, 247, 13824739, 16871482830550, 16871482830550, 13824739, 247, 1, 1, 502, 126781020, 1103881308184906
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