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.

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.

This page as a plain text file.
%I A381610 #10 Mar 03 2025 09:33:16
%S A381610 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,
%T A381610 28,25,29,26,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,
%U A381610 49,50,54,51,55,52,56,53,57,58,59,60,61,62,63,64,65,66,67
%N 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.
%C A381610 As a flat sequence, this is a permutation of the nonnegative integers with inverse A381611.
%H A381610 Rémy Sigrist, <a href="/A381610/b381610.txt">Table of n, a(n) for n = 0..4693</a> (rows for n = 0..3^7 flattened)
%H A381610 Rémy Sigrist, <a href="/A381610/a381610_1.gp.txt">PARI program</a>
%H A381610 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%e A381610 Table T(n, k) begins:
%e A381610   n   n-th row
%e A381610   --  --------
%e A381610    0  0
%e A381610    1  1
%e A381610    2  2
%e A381610    3  3
%e A381610    4  4
%e A381610    5  5
%e A381610    6  6
%e A381610    7  7
%e A381610    8  8, 9
%e A381610    9  10
%e A381610   10  11
%e A381610   11  12
%e A381610   12  13
%e A381610   13  14
%e A381610   14  15
%e A381610   15  16
%e A381610   16  17, 18
%e A381610   17  19
%e A381610   18  20
%e A381610   19  21
%e A381610   20  22
%o A381610 (PARI) \\ See Links section.
%Y A381610 Cf. A381607, A381609, A381611 (inverse).
%K A381610 nonn,base,tabf
%O A381610 0,3
%A A381610 _Rémy Sigrist_, Mar 01 2025