A269060 Magic sums of 3 X 3 semimagic squares composed of positive triangular numbers.

711, 1251, 1712, 2132, 2616, 2812, 2934, 3357, 3441, 3781, 3812, 4156, 4288, 4842, 4971, 4972, 5346, 5382, 5659, 5842, 5886, 6147, 6159, 6402, 6734, 7062, 7312, 7403, 7592, 7722, 8034, 8342, 8831, 8862, 8961, 9092, 9117, 9496, 9987, 10066, 10261, 10341

Offset

1,1

Links

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

Wikipedia, Triangular number.

Index entries for sequences related to magic squares

Example

A semimagic square with sum 711:
  |----|----|----|
  | 15 | 66 |630 |
  |----|----|----|
  |231 |435 | 45 |
  |----|----|----|
  |465 |210 | 36 |
  |----|----|----|

Crossrefs

Subsequence of A265197 and A269062.

Cf. A000217, A265141, A269061.

Sequence in context: A187283 A187280 A265197 * A265142 A251031 A256509

Adjacent sequences: A269057 A269058 A269059 * A269061 A269062 A269063

Keyword

nonn

Author

Arkadiusz Wesolowski, Feb 18 2016

Status

approved