The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A236301 Al-Antaakii's 15 X 15 magic square read by rows. 1
 62, 2, 222, 220, 8, 10, 214, 213, 212, 16, 18, 206, 204, 24, 64, 126, 78, 26, 198, 196, 32, 11, 189, 207, 34, 190, 188, 40, 80, 100, 128, 122, 94, 42, 182, 7, 35, 173, 183, 203, 180, 48, 96, 104, 98, 50, 124, 118, 110, 3, 31, 51, 165, 167, 179, 199, 112, 108 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS It's a magic square, containing central smaller magic squares of side length 13, 11, 9, 7, 5 and 3 - and moreover, the numbers are arranged so that all the odd numbers appear inside a central diamond and all the even ones appear outside. The magic constant is 15*(15^2+1)/2 = 1695. - Wolfdieter Lang, May 05 2014 LINKS Arkadiusz Wesolowski, Table of n, a(n) for n = 1..225 Eric Weisstein's World of Mathematics, Diamond Eric Weisstein's World of Mathematics, Magic Square Wikipedia, Centered square number Robin Wilson, Magic Squares (2008) EXAMPLE The magic square is |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 62| 2 |222|220| 8 | 10|214|213|212| 16| 18|206|204| 24| 64| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |126| 78| 26|198|196| 32| 11|189|207| 34|190|188| 40| 80|100| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |128|122| 94| 42|182| 7 | 35|173|183|203|180| 48| 96|104| 98| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 50|124|118|110| 3 | 31| 51|165|167|179|199|112|108|102|176| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 52| 70|120|201| 75|159|155|153| 83| 87| 79| 25|106|156|174| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 54| 72|205|181|141| 95|135|133|103| 99| 85| 45| 21|154|172| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |170|209|185|169|145|125|111|121|107|101| 81| 57| 41| 17| 56| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |211|187|171|163|149|129|109|113|117| 97| 77| 63| 55| 39| 15| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |168| 9 | 33| 49| 69| 89|119|105|115|137|157|177|193|217| 58| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 60| 82| 5 | 29| 65|127| 91| 93|123|131|161|197|221|144|166| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 66|142| 90| 1 |147| 67| 71| 73|143|139|151|225|136| 84|160| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |158|140| 92|114|223|195|175| 61| 59| 47| 27|116|134| 86| 68| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |152| 88|130|184| 44|219|191| 53| 43| 23| 46|178|132|138| 74| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 76|146|200| 28| 30|194|215| 37| 19|192| 36| 38|186|148|150| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |162|224| 4 | 6 |218|216| 12| 13| 14|210|208| 20| 22|202|164| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| CROSSREFS Cf. A124472. Sequence in context: A022084 A110823 A058913 * A218166 A106657 A033382 Adjacent sequences:  A236298 A236299 A236300 * A236302 A236303 A236304 KEYWORD nonn,fini,full,tabf AUTHOR Arkadiusz Wesolowski, Apr 21 2014 EXTENSIONS Edited by Wolfdieter Lang, May 05 2014 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 26 17:30 EDT 2021. Contains 347670 sequences. (Running on oeis4.)