cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A271142 A 3 X 3 semimagic square of odd squares, read by rows.

Original entry on oeis.org

4713241, 182439049, 207158449, 278990209, 76545001, 38775529, 110607289, 135326689, 148376761
Offset: 1

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Author

Arkadiusz Wesolowski, Mar 31 2016

Keywords

Comments

Three rows, three columns and one diagonal sum to the same number: 394310739 = A271022(1).

Examples

			The semimagic square is
|---------|---------|---------|
| 4713241 |182439049|207158449|
|---------|---------|---------|
|278990209| 76545001| 38775529|
|---------|---------|---------|
|110607289|135326689|148376761|
|---------|---------|---------|
It is:
|---------|---------|---------|
|  2171^2 | 13507^2 | 14393^2 |
|---------|---------|---------|
| 16703^2 |  8749^2 |  6227^2 |
|---------|---------|---------|
| 10517^2 | 11633^2 | 12181^2 |
|---------|---------|---------|
		

Crossrefs