A111468 -id:A111468 - cp's OEIS frontend

A111467 The following triangle contains n smallest numbers with the prime signature of n!. Sequence contains the triangle by rows.

1, 2, 3, 6, 10, 14, 24, 40, 54, 56, 120, 168, 264, 270, 280, 720, 1008, 1200, 1584, 1620, 1872, 5040, 7920, 8400, 9360, 11088, 11340, 11760, 40320, 63360, 67200, 74880, 88704, 94080, 97920, 104832, 362880, 570240, 673920, 798336, 881280, 943488, 984960, 1192320, 1224720

Offset: 1

Amarnath Murthy, Aug 05 2005

1
2 3
6 10 14
24 40 54 56
...
n! is the smallest number with that prime signature.

			4! = 24 = 2^3*3, 40 = 2^3*5, 54=3^3*2, 56=2^3*7
Hence the row corresponding n = 4 is 24,40,54,56.

Cf. A111468, A111469.

More terms from R. J. Mathar, May 08 2007

A111469 Row sums of A111467.

Original entry on oeis.org

1, 5, 30, 174, 1102, 8004, 64908, 631296, 7632144, 85538304, 767957760, 10378782720, 141810600960, 2211872624640, 34073996544000, 592443113472000, 9995136528384000, 193299238895616000, 3978509063587430400

Offset: 1

Amarnath Murthy, Aug 05 2005

Cf. A111467, A111468.

More terms from David Wasserman, Feb 10 2009

cp's OEIS Frontend

A111467 The following triangle contains n smallest numbers with the prime signature of n!. Sequence contains the triangle by rows.

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