A271579 Magic sums of 4 X 4 magic squares composed of triangular numbers.

1402, 1912, 2162, 2164, 2422, 2612, 3362, 3512, 3737, 3952, 4207, 4257, 4322, 4462, 4887, 4972, 5312, 5362, 5442, 5466, 5482, 5593, 5986, 5992, 6162, 6337, 6438, 6532, 6662, 6747, 6792, 6887, 6974, 6987, 7112, 7177, 7437, 7507, 7662, 7975, 8032, 8222

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Index entries for sequences related to magic squares

Example

Examples of 4 X 4 magic squares composed of triangular numbers.
.
|----|----|----|----|
| 66 |  1 | 300|1035|
|----|----|----|----|
| 465| 630| 171| 136|
|----|----|----|----|
| 780| 105| 496| 21 |
|----|----|----|----|
| 91 | 666| 435| 210|
|----|----|----|----|
The magic constant is 1402 = a(1).
.
|----|----|----|----|
|  1 | 45 | 435|1431|
|----|----|----|----|
| 300|1326| 276| 10 |
|----|----|----|----|
|1596| 190| 120|  6 |
|----|----|----|----|
| 15 | 351|1081| 465|
|----|----|----|----|
The magic constant is 1912 = a(2).

Crossrefs

Cf. A000217, A271580, A271711. Subsequence of A271581.

Sequence in context: A271549 A203918 A178271 * A271712 A352239 A206680

Adjacent sequences: A271576 A271577 A271578 * A271580 A271581 A271582

Keyword

nonn

Author

Arkadiusz Wesolowski, Apr 10 2016

Status

approved