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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.

A341206 Number of ways to write n as an ordered sum of 9 nonzero decimal palindromes.

Table of values

n a(n)
9 1
10 9
11 45
12 165
13 495
14 1287
15 3003
16 6435
17 12870
18 24301
19 43686
20 75249
21 124809
22 200115
23 311157
24 470415
25 693000
26 996633
27 1401436
28 1929465
29 2603979
30 3448440
31 4485267
32 5734395
33 7211718
34 8927523
35 10885050
36 13079257
37 15496065
38 18112050
39 20894757
40 23803659
41 26791749
42 29807697
43 32798448

List of values

[1, 9, 45, 165, 495, 1287, 3003, 6435, 12870, 24301, 43686, 75249, 124809, 200115, 311157, 470415, 693000, 996633, 1401436, 1929465, 2603979, 3448440, 4485267, 5734395, 7211718, 8927523, 10885050, 13079257, 15496065, 18112050, 20894757, 23803659, 26791749, 29807697, 32798448]

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

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