A038231
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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A038231: Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j).
(identification, match triangle)
1 · 4, 1 · 16, 8, 1 · 64, 48, 12, 1 … row sums 1, 5, 25, 125, 625, 3125, 15625, 78125, …
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basis-map coefficients of A026729 → basis A013611
(match reversed triangle)
1 · 1, 4 · 1, 8, 16 · 1, 12, 48, 64 … row sums 1, 5, 25, 125, 625, 3125, 15625, 78125, …
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A013611: Triangle of coefficients in expansion of (1+4x)^n.
(match reversed triangle)
1 · 1, 4 · 1, 8, 16 · 1, 12, 48, 64 … row sums 1, 5, 25, 125, 625, 3125, 15625, 78125, …