The On-Line Encyclopedia of Integer Sequences® (OEIS®)

https://oeis.org/

login The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation. Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate no special fonts The On-Line Encyclopedia of Integer Sequences® (OEIS®) Enter a sequence, word, or sequence number: Hints Welcome Video All the pages which follow are in English. For more information about the Encyclopedia, see the Welcome page. Languages: English Shqip العربية Bangla Български Català 中文 ( 正體字 , 简化字 (1) , 简化字 (2) ) Hrvatski Čeština Dansk Nederlands Esperanto Eesti فارسی Suomi Français Deutsch Ελληνικά ગુજરાતી עברית हिंदी Magyar Igbo Bahasa Indon...

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