User talk:2001:8004:D02:6401:284B:D048:91E2:C0D1

May 2021
Hello, I'm Bruce1ee. I wanted to let you know that one or more of your recent contributions&#32;to Knuth's up-arrow notation have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. —Bruce1eetalk 09:14, 11 May 2021 (UTC)