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A071422 a(n) = a(n-1) + sum of decimal digits of sigma(n), the sum of divisors of n. +0
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1, 4, 8, 15, 21, 24, 32, 38, 42, 51, 54, 64, 69, 75, 81, 85, 94, 106, 108, 114, 119, 128, 134, 140, 144, 150, 154, 165, 168, 177, 182, 191, 203, 212, 224, 234, 245, 251, 262, 271, 277, 292, 300, 312, 327, 336, 348, 355, 367, 379, 388, 405, 414, 417, 426, 429 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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