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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
The Prime Puzzles and Problems Connection, Puzzle 288
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
KEYWORD
nonn,more
AUTHOR
STATUS
approved

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Last modified June 13 23:50 EDT 2024. Contains 373391 sequences. (Running on oeis4.)