A217371 Array read by rows in which row n lists the prime factors of the n-th Lucas-Carmichael number.

3, 7, 19, 5, 11, 17, 5, 13, 31, 5, 11, 53, 7, 23, 31, 7, 19, 43, 5, 17, 83, 5, 7, 11, 23, 7, 23, 79, 5, 7, 11, 47, 5, 41, 101, 11, 23, 83, 11, 31, 67, 5, 11, 13, 41, 5, 7, 17, 53, 11, 59, 71, 7, 11, 23, 29, 19, 29, 109, 11, 23, 251, 11, 41, 149, 5, 7, 11, 191, 23, 47, 71

Offset: 1

Author

Gerasimov Sergey, Oct 01 2012

Keywords

• nonn
• easy
• tabf

Examples

			Array begins:
3, 7, 19,
5, 11, 17,
5, 13, 31,
5, 11, 53,
7, 23, 31,
7, 19, 43,
5, 17, 83,
5, 7, 11, 23.
		

Links

• Jason Kimberley, Rows i = 1..1000 of irregular triangle, flattened
• John Smith, Lucas-Carmichael number, PlanetMath.org
• Wikipedia, Lucas-Carmichael number
• Index entries for sequences related to Carmichael numbers.

Crossrefs

Cf. A006972, A027746.

Formula

The n-th row is the A006972(n)-th row of A027746. - Jason Kimberley, Nov 04 2012