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A338033 Triangular array read by rows: T(n,k) = A337656(n) * A337656(k) for 1 <= k <= n. 4
0, 0, 1, 0, 3, 9, 0, 7, 21, 49, 0, 12, 36, 84, 144, 0, 20, 60, 140, 240, 400, 0, 30, 90, 210, 360, 600, 900, 0, 44, 132, 308, 528, 880, 1320, 1936, 0, 65, 195, 455, 780, 1300, 1950, 2860, 4225, 0, 91, 273, 637, 1092, 1820, 2730, 4004, 5915, 8281 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Peter Kagey, Table of n, a(n) for n = 1..10011 (first 141 rows, flattened)

EXAMPLE

Multiplication table begins:

   * | 0  1   3   7  12   20   30   44   65

-----+-------------------------------------

   0 | 0

   1 | 0  1

   3 | 0  3   9

   7 | 0  7  21  49

  12 | 0 12  36  84 144

  20 | 0 20  60 140 240  400

  30 | 0 30  90 210 360  600  900

  44 | 0 44 132 308 528  880 1320 1936

  65 | 0 65 195 455 780 1300 1950 2860 4225

CROSSREFS

Cf. A337656, A337657, A338031 (addition), A338034 (by antidiagonals).

Cf. A337661, A337974, A338016.

Sequence in context: A324834 A019832 A244337 * A087566 A011337 A195456

Adjacent sequences:  A338030 A338031 A338032 * A338034 A338035 A338036

KEYWORD

nonn,tabl

AUTHOR

Peter Kagey, Oct 07 2020

STATUS

approved

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Last modified August 2 09:22 EDT 2021. Contains 346422 sequences. (Running on oeis4.)