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.

A348575 Irregular triangle read by rows: T(n, k) = T(n, k-1) + k - 1 if digsum(T(n, k-1)) is already in the sequence, otherwise start a new row with T(n+1, 1) = digsum(T(n, k-1)); T(1, 1) = 1.

Table of values

n a(n)
1 1
2 2
3 4
4 7
5 11
6 16
7 22
8 29
9 37
10 10
11 11
12 13
13 16
14 20
15 25
16 31
17 38
18 46
19 55
20 65
21 76
22 88
23 101
24 115
25 130
26 146
27 163
28 181
29 200
30 220
31 241
32 263
33 286
34 310
35 335
36 361
37 388
38 19
39 20
40 22
41 25
42 29
43 34
44 40
45 47
46 55
47 64
48 74
49 85
50 97
51 110
52 124
53 139
54 155
55 172
56 190
57 209
58 229
59 250
60 272
61 295

List of values

[1, 2, 4, 7, 11, 16, 22, 29, 37, 10, 11, 13, 16, 20, 25, 31, 38, 46, 55, 65, 76, 88, 101, 115, 130, 146, 163, 181, 200, 220, 241, 263, 286, 310, 335, 361, 388, 19, 20, 22, 25, 29, 34, 40, 47, 55, 64, 74, 85, 97, 110, 124, 139, 155, 172, 190, 209, 229, 250, 272, 295]

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

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