login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A271583 Magic sums of 4 X 4 magic squares composed of squares of primes. 1
509020, 736300, 860932, 1368340, 2431780 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..5.

The Prime Puzzles and Problems Connection, Puzzle 288

Index entries for sequences related to magic squares

EXAMPLE

Examples of 4 X 4 magic squares composed of squares of primes.

.

|-----|-----|-----|-----|

| 29^2| 71^2|277^2|653^2|

|-----|-----|-----|-----|

|191^2|647^2|211^2| 97^2|

|-----|-----|-----|-----|

|673^2|139^2|163^2|101^2|

|-----|-----|-----|-----|

|137^2|257^2|601^2|251^2|

|-----|-----|-----|-----|

The magic constant is 509020 = a(1).

.

|-----|-----|-----|-----|

|179^2|107^2|383^2|739^2|

|-----|-----|-----|-----|

|353^2|691^2|331^2|157^2|

|-----|-----|-----|-----|

|761^2|283^2|263^2| 89^2|

|-----|-----|-----|-----|

| 23^2|409^2|641^2|397^2|

|-----|-----|-----|-----|

The magic constant is 736300 = a(2).

CROSSREFS

Cf. A271580. Subsequence of A271582.

Sequence in context: A124945 A205167 A252776 * A076337 A258154 A101036

Adjacent sequences:  A271580 A271581 A271582 * A271584 A271585 A271586

KEYWORD

nonn,more

AUTHOR

Arkadiusz Wesolowski, Apr 10 2016

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 29 01:42 EST 2020. Contains 331328 sequences. (Running on oeis4.)