The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A173869 Irregular table T(n,k) = A164341(n,k) * A036039(n,k) read by rows. 0
 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 (list; graph; refs; listen; history; text; internal format)
 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: 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. Sequence in context: A033754 A171661 A276418 * A247377 A167909 A368745 Adjacent sequences: A173866 A173867 A173868 * A173870 A173871 A173872 KEYWORD easy,nonn,tabf AUTHOR Alford Arnold, Mar 12 2010 EXTENSIONS Definition rephrased by R. J. Mathar, Mar 26 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 2 05:08 EST 2024. Contains 370460 sequences. (Running on oeis4.)