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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A382068 Array read by ascending antidiagonals: A(n,m) is obtained by concatenating the digits of floor(n/m) with those of its fractional part up to the digits of the first period, where the leading and trailing 0's are omitted.

Original entry on oeis.org

1, 2, 5, 3, 1, 3, 4, 15, 6, 25, 5, 2, 1, 5, 2, 6, 25, 13, 75, 4, 16, 7, 3, 16, 1, 6, 3, 142857, 8, 35, 2, 125, 8, 5, 285714, 125, 9, 4, 23, 15, 1, 6, 428571, 25, 1, 10, 45, 26, 175, 12, 83, 571428, 375, 2, 1, 11, 5, 3, 2, 14, 1, 714285, 5, 3, 2, 9
Offset: 1

Views

Author

Stefano Spezia, Mar 14 2025

Keywords

Examples

			The array begins as:
   1,  5,  3,  25,  2,  16,  142857,  125,  1,  1,  9, ...
   2,  1,  6,   5,  4,   3,  285714,   25,  2,  2, 18, ...
   3, 15,  1,  75,  6,   5,  428571,  375,  3,  3, 27, ...
   4,  2, 13,   1,  8,   6,  571428,    5,  4,  4, 36, ...
   5, 25, 16, 125,  1,  83,  714285,  625,  5,  5, 45, ...
   6,  3,  2,  15, 12,   1,  857142,   75,  6,  6, 54, ...
   7, 35, 23, 175, 14, 116,       1,  875,  7,  7, 63, ...
   8,  4, 26,   2, 16,  13, 1142875,    1,  8,  8, 72, ...
   9, 45,  3, 225, 18,  15, 1285714, 1125,  1,  9, 81, ...
  10,  5, 33,  25,  2,  16, 1428571,  125, 11,  1, 90, ...
  11, 55, 36, 275, 22, 183, 1571428, 1375, 12, 11,  1, ...
  ...
A(4,1) = 4 since 4/1 = 4;
A(7,4) = 175 since 7/4 = 1.75;
A(5,7) = 714285 since 5/7 = 0.{714285}*, where {...}* means that these digits repeat forever.
		

Crossrefs

Cf. A000012 (main diagonal), A000027 (1st column), A266385 (1st row).