id:A055033 - OEIS Search Results

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usigma(usigma(n)), where usigma(n) is the sum of unitary divisors of n (A034448).

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1, 4, 5, 6, 12, 20, 9, 10, 18, 30, 20, 30, 24, 36, 36, 18, 30, 72, 30, 72, 33, 50, 36, 50, 42, 96, 40, 54, 72, 90, 33, 48, 68, 84, 68, 78, 60, 120, 72, 84, 96, 132, 60, 120, 120, 90, 68, 90, 78, 168, 90, 144, 84, 160, 90, 90, 102, 180, 120, 216, 96 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A034448, A051027, A064012.` `Sequence in context: A072623 A006144 A047429 this_sequence A089119 A063833 A167434` `Adjacent sequences: A055030 A055031 A055032 this_sequence A055034 A055035 A055036`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 30 2001`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

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