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.

A381732 Proceeding from left to right, between any two consecutive digits (d_i, d_i+1) of an integer k, write down apart the lacking consecutive digits, in increasing order if d_i or decreasing order if d_i>d_i+1. If abs(d_i - d_i+1) = 0 or 1 no digit is added. Sequence lists integers k that divide such resulting numbers.

Table of values

n a(n)
1 27
2 737
3 909
4 1845
5 1912
6 7078
7 27412
8 90009
9 870129
10 990099
11 6852899
12 9090909
13 17388261
14 70168376
15 70787078
16 96096078
17 96707298
18 162533711
19 358006673
20 737737737
21 1050889491
22 2238028254
23 3281718034
24 4249370147
25 9009009009
26 11819327599
27 12178217823
28 13851266943
29 18768863945

List of values

[27, 737, 909, 1845, 1912, 7078, 27412, 90009, 870129, 990099, 6852899, 9090909, 17388261, 70168376, 70787078, 96096078, 96707298, 162533711, 358006673, 737737737, 1050889491, 2238028254, 3281718034, 4249370147, 9009009009, 11819327599, 12178217823, 13851266943, 18768863945]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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