id:A053224 - OEIS Search Results

Search: id:A053224

Displaying 1-1 of 1 results found.

page 1

n for which sigma(n) < sigma(n+1).

+0
16

1, 2, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 47, 49, 51, 53, 55, 57, 59, 61, 62, 63, 65, 67, 69, 71, 73, 74, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 107, 109, 111, 113, 115, 119, 121, 123, 125, 127, 129, 131 (list; graph; listen)

	OFFSET	`1,2`
	MAPLE	with (numtheory): seq( `if`((sigma(i) < sigma(i+1)), i, print( )), i=1..134);
	CROSSREFS	`Cf. A000203, A053222, A053226, A053230.` `Sequence in context: A042943 A004274 A004280 this_sequence A091377 A005357 A092919` `Adjacent sequences: A053221 A053222 A053223 this_sequence A053225 A053226 A053227`
	KEYWORD	`nonn`
	AUTHOR	`Asher Auel (asher.auel(AT)reed.edu) Jan 06 2000`

page 1

Search completed in 0.002 seconds

Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

AT&T Labs Research