Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A134605
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A134605 Nonprime numbers such that the square root of the sum of squares of their prime factors is an integer. +0
20
16, 48, 81, 320, 351, 486, 512, 625, 1080, 1260, 1350, 1375, 1792, 1836, 2070, 2145, 2175, 2401, 2730, 2772, 3072, 3150, 3510, 4104, 4305, 4625, 4650, 4655, 4998, 5880, 6000, 6174, 6545, 7098, 7128, 7182, 7650, 7791, 7889, 7956, 9030, 9108, 9295, 9324 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(1)=48 since 48=2*2*2*2*3 and sqrt(4*2^2+3^2)=sqrt(25)=5.

CROSSREFS

Cf. A001597, A025475, A134333, A134344, A134376.

Cf. A134600, A134602, A134608, A134611, A134616, A134618, A134620.

Adjacent sequences: A134602 A134603 A134604 this_sequence A134606 A134607 A134608

Sequence in context: A069084 A084112 A050428 this_sequence A035008 A023648 A098322

KEYWORD

nonn

AUTHOR

Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Nov 11 2007

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified January 8 02:43 EST 2009. Contains 152824 sequences.


AT&T Labs Research