Item View & Download Statistics: Proof without words : sum of triangular numbers

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Geo Map
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Region #
NA - North America 111
EU - Europe 20
AS - Asia, other 11
SA - South America 3
Total 145
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Country #
US - United States of America 108
CN - China 8
DE - Germany 4
FI - Finland 3
FR - France 3
GB - United Kingdom 3
IE - Ireland 3
LT - Lithuania 2
MX - Mexico 2
SG - Singapore 2
other - Other Country 7
Total 145
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City #
Council Bluffs 25
Ashburn 13
Los Angeles 6
Columbus 4
Boardman 3
Dublin 3
London 3
Passau 3
Beijing 2
Buffalo 2
other 81
Total 145
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File name #
45971 - resumen_proof_without_words_sum_triangular_numbers.pdf - ITEM:( 10553/51602) 145
Total 145
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Tot
2021 31 4225 21515 101 51
2022 20 0253 2175 01 28
2023 61 2121 0001 12 17
2024 03 8674 5021 01 37
2025 53 2200 0000 00 12
Ever 145