A271020 Magic sums of 3 X 3 semimagic squares of triangular numbers whose rows, columns, and at least one of the two main diagonals sum to the same number.

49288842, 62620221, 116153046, 128221941, 132479727, 443599581, 563581992, 750128651, 1045377417, 1153997472, 1192317546, 1232221059, 1565505534, 1881096741, 2192812511, 2415153276, 2903826159, 3068390847, 3205548534, 3311993184, 3647394275, 3992396232

Offset

1,1

Links

Table of n, a(n) for n=1..22.

Arkadiusz Wesolowski, Examples of these semimagic squares

Index entries for sequences related to magic squares

Crossrefs

Cf. A271021, A271022. Subsequence of A269060.

Sequence in context: A017339 A017459 A017591 * A358018 A227797 A236947

Adjacent sequences: A271017 A271018 A271019 * A271021 A271022 A271023

Keyword

nonn

Author

Arkadiusz Wesolowski, Mar 28 2016

Status

approved