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

Offset: 1

Author

Alford Arnold, Mar 12 2010

Keywords

• easy
• nonn
• tabf

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.

Examples

			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:
1..2..2..3..2..4.. A164341 times
1..1..1..2..3..1.. A036039 yields
1..2..2..6..6..4..
		

Crossrefs

Cf. A000041, A000085, A036039, A104778, A111883, A164341.

Extensions

Definition rephrased by R. J. Mathar, Mar 26 2010