the numbers betwenn 1 and 365222
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The sum of the first n cubed numbers is the square of the nth triangular number.
Because it is ! The first 10 triangular numbers are... 1,3,6,10,15,21,28,36,45 & 55
The first twelve triangular numbers are: 1 3 6 10 15 21 28 36 45 55 66 78
no No it is not. The first 5 triangular numbers are: 1, 3, 6, 10, 15
1, 3 and 6