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- 14:29, 2 February 2023 (diff | hist) . . (+710) . . User:Gerhard Kirchner (current)
- 14:16, 3 March 2022 (diff | hist) . . (+140) . . User:Gerhard Kirchner
- 11:08, 10 February 2021 (diff | hist) . . (+132) . . User:Gerhard Kirchner
- 05:36, 6 October 2020 (diff | hist) . . (+1) . . User:Gerhard Kirchner
- 05:35, 6 October 2020 (diff | hist) . . (+62) . . User:Gerhard Kirchner
- 04:11, 26 July 2020 (diff | hist) . . (-11) . . User:Gerhard Kirchner
- 04:09, 26 July 2020 (diff | hist) . . (+210) . . User:Gerhard Kirchner
- 05:34, 17 May 2020 (diff | hist) . . (+2) . . User:Gerhard Kirchner
- 05:33, 17 May 2020 (diff | hist) . . (+18) . . User:Gerhard Kirchner
- 05:29, 17 May 2020 (diff | hist) . . (+420) . . User:Gerhard Kirchner
- 04:26, 31 May 2017 (diff | hist) . . (+61) . . User:Gerhard Kirchner
- 15:31, 3 March 2017 (diff | hist) . . (+132) . . User:Gerhard Kirchner
- 14:52, 22 February 2017 (diff | hist) . . (+121) . . User:Gerhard Kirchner
- 06:36, 31 January 2017 (diff | hist) . . (+129) . . User:Gerhard Kirchner
- 13:24, 15 January 2017 (diff | hist) . . (+51) . . User:Gerhard Kirchner
- 06:11, 3 January 2017 (diff | hist) . . (+184) . . User:Gerhard Kirchner
- 12:43, 19 October 2016 (diff | hist) . . (-4,073) . . User:Gerhard Kirchner (Replaced content with 'teacher of mathematics and physics at a German high school (Gymnasium). Status: retired Submitted: Extension and theory for sequences A110713 and A160375')
- 15:07, 7 August 2016 (diff | hist) . . (-63) . . User:Gerhard Kirchner
- 15:07, 6 August 2016 (diff | hist) . . (+60) . . User:Gerhard Kirchner
- 11:14, 24 July 2016 (diff | hist) . . (+19) . . User:Gerhard Kirchner
- 11:11, 24 July 2016 (diff | hist) . . (+24) . . User:Gerhard Kirchner
- 11:03, 24 July 2016 (diff | hist) . . (+2) . . User:Gerhard Kirchner
- 10:52, 24 July 2016 (diff | hist) . . (+177) . . User:Gerhard Kirchner
- 04:59, 23 July 2016 (diff | hist) . . (+1) . . User:Gerhard Kirchner
- 04:53, 23 July 2016 (diff | hist) . . (+81) . . User:Gerhard Kirchner
- 12:04, 13 June 2016 (diff | hist) . . (-443) . . User:Gerhard Kirchner
- 13:14, 10 December 2015 (diff | hist) . . (+161) . . User:Gerhard Kirchner
- 12:27, 2 December 2015 (diff | hist) . . (-17) . . User:Gerhard Kirchner
- 12:26, 2 December 2015 (diff | hist) . . (-1,535) . . User:Gerhard Kirchner
- 05:47, 1 December 2015 (diff | hist) . . (-438) . . User:Gerhard Kirchner
- 05:41, 1 December 2015 (diff | hist) . . (+4,662) . . User:Gerhard Kirchner
- 04:50, 1 December 2015 (diff | hist) . . (+1,450) . . User:Gerhard Kirchner