cp's OEIS Frontend

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.

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A381610 Irregular table T(n, k), n >= 0, k = 1..A381609(n), read by rows: the n-th row lists the numbers m such that A381607(m) = n.

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 27, 24, 28, 25, 29, 26, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 54, 51, 55, 52, 56, 53, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67
Offset: 0

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Author

Rémy Sigrist, Mar 01 2025

Keywords

Comments

As a flat sequence, this is a permutation of the nonnegative integers with inverse A381611.

Examples

			Table T(n, k) begins:
  n   n-th row
  --  --------
   0  0
   1  1
   2  2
   3  3
   4  4
   5  5
   6  6
   7  7
   8  8, 9
   9  10
  10  11
  11  12
  12  13
  13  14
  14  15
  15  16
  16  17, 18
  17  19
  18  20
  19  21
  20  22
		

Crossrefs

Cf. A381607, A381609, A381611 (inverse).

Programs

  • PARI
    \\ See Links section.
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