A271581 Magic sums of 4 X 4 magic squares composed of triangular numbers and squares.

251, 305, 317, 341, 362, 366, 371, 377, 387, 389, 410, 421, 427, 431, 434, 435, 440, 446, 455, 458, 470, 482, 483, 484, 490, 494, 497, 500, 506, 512, 515, 519, 521, 523, 525, 536, 546, 547, 548, 550, 551, 553, 563, 566, 572, 575, 578, 580, 584, 586, 590, 591

Offset: 1

Author

Arkadiusz Wesolowski, Apr 10 2016

Keywords

• nonn

Examples

			Examples of 4 X 4 magic squares composed of triangular numbers and squares.
.
|---|---|---|---|
| 6 | 10|210| 25|
|---|---|---|---|
| 81|121| 21| 28|
|---|---|---|---|
| 64|105| 4 | 78|
|---|---|---|---|
|100| 15| 16|120|
|---|---|---|---|
The magic constant is 251 = a(1).
.
|---|---|---|---|
| 4 | 10| 81|210|
|---|---|---|---|
|105|144| 55| 1 |
|---|---|---|---|
|171| 15| 91| 28|
|---|---|---|---|
| 25|136| 78| 66|
|---|---|---|---|
The magic constant is 305 = a(2).
		

Links

• Index entries for sequences related to magic squares

Crossrefs

Cf. A271578, A271579.