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A190266
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Numbers n such that tau(n-1)=(tau(n))^2=tau(n+1), where tau(n)=A000005(n)(number of divisors of n).
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0
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7, 1241, 1673, 1751, 1769, 2471, 2839, 3161, 3305, 3497, 3711, 4135, 4265, 4279, 4471, 4711, 5191, 5433, 5561, 6017, 6041, 6103, 6313, 6809, 6953, 7031, 7241, 7463, 7671, 8023, 8057, 8345, 8791, 8889, 9079, 10169, 10793, 10891, 11111, 11209, 11391, 11751, 12297, 13207
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