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I case you ever need it: The Online Encyclopedia of Integer Sequences. [View all]
It's here: The Online Encyclopedia of Integer Sequences.
Here's what they say about themselves (while asking for donations):
...we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).
The Wikipedia Page about it: On-Line Encyclopedia of Integer Sequences.
In case you're wondering, I came across it while looking up the nuclear shell "magic numbers" for a talk I'm giving next week.
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