A027465
identification: the entry's rule defines the sequence for every index; tail: the sequence is the entry's tail after some prefix rows; match_*: finite agreement only.
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A027465: Cube of lower triangular normalized binomial matrix.
(identification, match triangle)
1 · 3, 1 · 9, 6, 1 · 27, 27, 9, 1 … row sums 1, 4, 16, 64, 256, 1024, 4096, 16384, …
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basis-map coefficients of A026729 → basis A013610
(match reversed triangle)
1 · 1, 3 · 1, 6, 9 · 1, 9, 27, 27 … row sums 1, 4, 16, 64, 256, 1024, 4096, 16384, …
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A013610: Triangle of coefficients in expansion of (1+3*x)^n.
(match reversed triangle)
1 · 1, 3 · 1, 6, 9 · 1, 9, 27, 27 … row sums 1, 4, 16, 64, 256, 1024, 4096, 16384, …