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A350417 a(n) is the maximum number of rows of width n that can be filled by stacking squares of sizes 1 through n without creating voids or overhangs. 1

%I #24 Nov 17 2022 10:02:30

%S 1,2,4,5,7,8,12,12,16,15,20,24,26,25,30,29,35,33,40,40,47,46,61,51,73,

%T 56,63,61,71,71,82,82,90,83,96,95,108,99,108,111,127,102,146,144,130,

%U 150,150,161,144,160,175,173,186,162,183,179,200,182,202,197,226

%N a(n) is the maximum number of rows of width n that can be filled by stacking squares of sizes 1 through n without creating voids or overhangs.

%C No square of any size can be used more than once. The initial terms listed are conjectured from what I can draw. Trying to stack squares in this way feels like playing Tetris and comes from the squared square idea (see A295130).

%H Pontus von Brömssen, <a href="/A350417/a350417.svg">A350417(61) = 226</a>.

%e |‾‾‾‾‾‾‾‾‾‾‾|

%e | |

%e | 5 |

%e | | a(7)=12

%e |___________||‾‾‾|

%e |‾‾‾‾‾‾‾‾||_||___|

%e | 4 ||‾‾‾‾‾‾|

%e | || 3 |

%e |________||______|

%e | 7 |

%e .

%e .

%e |‾‾‾‾‾‾|

%e |‾‾‾‾‾‾‾‾‾‾‾‾‾|| 3 | a(10)=15

%e | || ||‾|

%e | 6 ||‾‾‾‾‾‾‾‾‾|

%e | || 4 |

%e | || |

%e |_____________||_________|

%e | 10 |

%Y Cf. A295130.

%K nonn

%O 1,2

%A _Antoine Beaulieu_, Dec 29 2021

%E a(19) corrected by, a(21) and beyond from _Pontus von Brömssen_, Nov 15 2022

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Last modified August 24 01:02 EDT 2024. Contains 375396 sequences. (Running on oeis4.)