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Number in position n when the numbers i^2 - i*j + j^2 (1 <= i <= j) are arranged in nondecreasing order.

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`%I #3 Mar 30 2012 18:55:58
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`%S 1,3,4,7,7,9,12,13,13,16,19,19,21,21,25,27,28,28,31,31,36,37,37,39,39,
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`%T 43,43,48,49,49,49,52,52,57,57,61,61,63,63,64,67,67,73,73,75,76,76,79,
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`%U 79,81,84,84,91,91,91,91,93,93,97,97,100,103,103,108,109,109,111,111,112,112,117,117
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`%N Number in position n when the numbers i^2 - i*j + j^2 (1 <= i <= j) are arranged in nondecreasing order.
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`%K nonn
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`%O 1,2
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`%A _Clark Kimberling_
`