deletions | additions       diff --git a/layout.md b/layout.md  index 45284a4..b6b23c3 100644  --- a/layout.md  +++ b/layout.md 
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p_Stirling_numbers_of_span__.html  p_The_notation_of_each__.html  Differences_between_Stirling_numbers_of__.html  Stirling_numbers_of_the_second__.html