Resources

Here are some things I like.

Books

• Generatingfunctionology by Herbert Wilf
• Introduction to Analytic Number Theory by Tom Apostol
• The Sensual (Quadratic) Form by John Conway

Blogs

• adamant’s CodeForces blog
• baihacker’s GitHub blog
• Min-25’s blog (deleted, preserved on the Internet Archive)

Other

• actually good math problems Facebook group
• cp-algorithms.com
• Project Euler Community Discord server

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If you’d like to suggest something to include here, get in contact with me.