User contributions for 2601:646:300:7A60:C8DB:6489:86CF:7FA5
Results for 2601:646:300:7A60:C8DB:6489:86CF:7FA5 talk block log logs global block log filter log
12 June 2021
- 18:0118:01, 12 June 2021 diff hist −34 Nonagonal number No citation needed; follows from definition by solving the quadratic (x/2)(7x-5) = n and taking the positive root
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