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Size: a a a
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sage: var("k")
k
sage: sum(k + 1, k, 2, 12) + product(2*k, k, 4, 10)
77414488
AR
sage: [k + 1 for k in [2..12]]
[3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
sage: [2*k for k in [4..10]]
[8, 10, 12, 14, 16, 18, 20]
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