A297191

View A297191 at the OEIS

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.

• A297191: Irregular triangle read by rows formed by taking every other row of the Delannoy array (A008288) regarded as a triangle. (identification, match reversed triangle, match triangle)
  basis-map coefficients of A297191, shifted → basis A008288
  1 · 1, 3, 1 · 1, 7, 13, 7, 1 … row sums 1, 5, 29, 169, 985, 5741, 33461, …
  A297191 [−3−2√2, −3+2√2] nonnegative