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A265197 Magic sums of 3 X 3 semimagic squares composed of triangular numbers. 3
711, 1251, 1527, 1712, 2132, 2486, 2616, 2812, 2934, 3357, 3441, 3781, 3812, 4156, 4288, 4842, 4971, 4972, 5034, 5346, 5382, 5659, 5842, 5886, 6147, 6159, 6402, 6734, 6747, 7062, 7312, 7403, 7592, 7722, 8034, 8102, 8342, 8831, 8862, 8961, 9092, 9117 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

These semimagic squares are composed of 9 distinct triangular numbers >= 0.

LINKS

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

Wikipedia, Triangular number

Index entries for sequences related to magic squares

CROSSREFS

Cf. A000217, A265141, A265198.

Sequence in context: A252965 A187283 A187280 * A269060 A265142 A251031

Adjacent sequences:  A265194 A265195 A265196 * A265198 A265199 A265200

KEYWORD

nonn

AUTHOR

Arkadiusz Wesolowski, Dec 04 2015

STATUS

approved

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Last modified May 25 17:53 EDT 2020. Contains 334595 sequences. (Running on oeis4.)