A124140 Numbers k such that there is a bigger number m satisfying A000203(k) = A000203(m) = m + k - gcd(m,k).

24, 78, 90, 224, 260, 264, 348, 570, 728, 846, 996, 1580, 1692, 2030, 2514, 3552, 3762, 4560, 4648, 4668, 5250, 5976, 6448, 6650, 6954, 8634, 10458, 11994, 13624, 14056, 14476, 16056, 17064, 17292, 17412, 18960, 21712, 22652, 23500, 24108, 26940, 27132, 27412

Offset: 1

Author

Yasutoshi Kohmoto, Dec 01 2006

Keywords

• nonn

Comments

R. Mathar computed this sequence up to 15000.

Examples

			24 is in the sequence because A000203(24) = A000203(38) = 60 = 24 + 38 - gcd(24,38).
		

Crossrefs

Cf. A000203, A124141.

Extensions

Edited by Stefan Steinerberger, Aug 14 2007

Terms corrected by and more terms from Jinyuan Wang, Feb 07 2022