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 A256627 Alfred Moessner's 8 X 8 magic square made from the first 64 triangular numbers, read by rows. 2
 1378, 171, 496, 1653, 630, 15, 36, 1081, 105, 820, 703, 6, 325, 2016, 1275, 210, 861, 120, 3, 666, 1953, 300, 231, 1326, 190, 1431, 1596, 465, 10, 595, 1128, 45, 0, 741, 946, 91, 276, 1225, 1830, 351, 1711, 406, 153, 1540, 1035, 66, 21, 528, 435, 1770, 1485, 136, 55, 990, 561, 28, 780, 1, 78, 903, 1176, 253, 378, 1891 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The magic sum = 5460 is also a triangular number. REFERENCES Alfred Moessner, A magic square of triangle numbers, The Mathem. Student 10 (1942), p. 95. LINKS Table of n, a(n) for n=1..64. Eric Weisstein's World of Mathematics, Magic Square Index entries for sequences related to magic squares EXAMPLE Let a(n) = A000217(k). Then the k's are: |---|---|---|---|---|---|---|---| | 52| 18| 31| 57| 35| 5 | 8 | 46| |---|---|---|---|---|---|---|---| | 14| 40| 37| 3 | 25| 63| 50| 20| |---|---|---|---|---|---|---|---| | 41| 15| 2 | 36| 62| 24| 21| 51| |---|---|---|---|---|---|---|---| | 19| 53| 56| 30| 4 | 34| 47| 9 | |---|---|---|---|---|---|---|---| | 0 | 38| 43| 13| 23| 49| 60| 26| |---|---|---|---|---|---|---|---| | 58| 28| 17| 55| 45| 11| 6 | 32| |---|---|---|---|---|---|---|---| | 29| 59| 54| 16| 10| 44| 33| 7 | |---|---|---|---|---|---|---|---| | 39| 1 | 12| 42| 48| 22| 27| 61| |---|---|---|---|---|---|---|---| CROSSREFS Cf. A000217, A132362, A132648. Sequence in context: A323815 A352731 A307422 * A260368 A323814 A204056 Adjacent sequences: A256624 A256625 A256626 * A256628 A256629 A256630 KEYWORD nonn,fini,full,tabf AUTHOR Arkadiusz Wesolowski, Apr 05 2015 STATUS approved

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Last modified May 31 23:42 EDT 2023. Contains 363068 sequences. (Running on oeis4.)