id:A045661 - OEIS Search Results

Search: id:A045661

Displaying 1-1 of 1 results found.

page 1

Product_{d|n} (n/d + d).

+0
1

2, 9, 16, 100, 36, 1225, 64, 2916, 600, 5929, 144, 529984, 196, 18225, 16384, 231200, 324, 3538161, 400, 5143824, 48400, 89401, 576, 1482250000, 6760, 164025, 112896, 26050816, 900, 5679280321, 1024, 50808384, 226576, 442225 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) is a square for all non-square arguments n different from 4m^4.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	MATHEMATICA	`Times@@(#/Divisors[ # ]+Divisors[ # ])& /@ Range[ 48 ]`
	CROSSREFS	`Sequence in context: A032211 A032136 A032040 this_sequence A078707 A085332 A062981` `Adjacent sequences: A045658 A045659 A045660 this_sequence A045662 A045663 A045664`
	KEYWORD	`nonn,nice,easy`
	AUTHOR	`Wouter Meeussen (wouter.meeussen(AT)pandora.be)`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research