[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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.
4
49288842, 62620221, 116153046, 128221941, 132479727, 443599581, 563581992, 750128651, 1045377417, 1153997472, 1192317546, 1232221059, 1565505534, 1881096741, 2192812511, 2415153276, 2903826159, 3068390847, 3205548534, 3311993184, 3647394275, 3992396232
(list; graph; refs; listen; history; text; internal format)
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

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified November 23 18:17 EST 2024. Contains 378048 sequences.
License Agreements, Terms of Use, Privacy Policy