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A269231 a(n) = smallest magic sum of any 3 X 3 semimagic square which contains exactly n cubes. 5
19, 16, 15, 32, 73, 153, 1520, 5104, 241801435 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
Multimagic Squares, Magic squares of cubes
The Prime Puzzles and Problems Connection, Puzzle 412
CROSSREFS
Sequence in context: A106706 A291427 A099939 * A135734 A215021 A215085
KEYWORD
nonn,fini,hard,more
AUTHOR
EXTENSIONS
a(8) from Christian Boyer, added by Arkadiusz Wesolowski, Apr 14 2016
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)