A173869 - OEIS

A173869

Irregular table T(n,k) = A164341(n,k) * A036039(n,k) read by rows.

1, 2, 2, 6, 6, 4, 24, 24, 18, 24, 10, 120, 120, 120, 120, 90, 80, 26, 720, 720, 720, 480, 720, 720, 300, 480, 540, 300, 76, 5040, 5040, 5040, 5040, 5040, 5040, 3360, 3780, 3360, 5040, 2100, 2100, 2520, 1092, 232, 40320, 40320, 40320, 40320, 25200, 40320

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OFFSET

1,2

COMMENTS

The n-th row has A000041(n) columns.

The row sums yield A111883(n) = A000085(n)^2.

A000041 and A000085 are also relevant to the table defined by A104778.

LINKS

Table of n, a(n) for n=1..50.

EXAMPLE

The row lengths of A164341 and A036039 are the same, so one can multiply

the flattened arrays point-by-point to compute this sequence here: