id:A053225 - OEIS Search Results

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First differences of sigma(n) that are positive.

+0
3

2, 1, 3, 6, 7, 5, 16, 10, 7, 21, 22, 4, 36, 11, 16, 42, 31, 6, 43, 22, 34, 54, 40, 76, 36, 26, 66, 48, 10, 108, 34, 8, 23, 60, 58, 48, 123, 40, 10, 16, 72, 106, 5, 140, 24, 60, 144, 56, 16, 132, 73, 61, 114, 106, 172, 106, 96, 126, 66, 216, 53, 56, 156, 127, 76, 204, 44, 36 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = A053222(A053224(n))`
	MAPLE	with (numtheory): seq( `if`((sigma(i) < sigma(i+1)), (sigma(i+1)-sigma(i)), print( )), i=1..139);
	CROSSREFS	`Cf. A000203, A053222, A053227.` `Sequence in context: A024930 A121966 A021472 this_sequence A050043 A113396 A112647` `Adjacent sequences: A053222 A053223 A053224 this_sequence A053226 A053227 A053228`
	KEYWORD	`nonn`
	AUTHOR	`Asher Auel (asher.auel(AT)reed.edu) Jan 06 2000`

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Last modified November 24 19:42 EST 2009. Contains 167435 sequences.

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