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Statements

Subject Item
dbr:Doubly_triangular_number
rdfs:label
Doubly triangular number
rdfs:comment
In mathematics, the doubly triangular numbers are the numbers that appear within the sequence of triangular numbers, in positions that are also triangular numbers. That is, if denotes the th triangular number, then the doubly triangular numbers are the numbers of the form .
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dbc:Factorial_and_binomial_topics dbc:Integer_sequences
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dbo:abstract
In mathematics, the doubly triangular numbers are the numbers that appear within the sequence of triangular numbers, in positions that are also triangular numbers. That is, if denotes the th triangular number, then the doubly triangular numbers are the numbers of the form .
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