Square pyramid
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What links here
Square pyramidal number
Square
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Octahedral number
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8000 (number)
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7000 (number)
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4000 (number)
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5000 (number)
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6000 (number)
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Pyramidal number
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Tetrahedral number
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10,000
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2000 (number)
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800 (number)
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600 (number)
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500 (number)
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300 (number)
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1000 (number)
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140 (number)
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105 (number)
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91 (number)
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Multimagic square
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Ehrhart polynomial
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Double counting (proof technique)
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Summation
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Square number
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Liber Abaci
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Bernoulli number
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