References to A057944

Largest triangular number less than or equal to n; write m-th triangular number m+1 times.
0, 1, 1, 3, 3, 3, 6, 6, 6, 6, 10, 10, 10, 10, 10, 15, 15, 15, 15, 15, 15, 21, 21, 21, 21, 21

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