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.

A219667 Number of happy numbers without zeros and with digits in nondecreasing order <= 10^n.

Table of values

n a(n)
0 1
1 2
2 10
3 30
4 111
5 296
6 711
7 1625
8 3583
9 7088
10 13377
11 24143
12 41376
13 68551
14 111068
15 174887
16 269592
17 410043
18 612350
19 900484
20 1310108
21 1879862
22 2664399
23 3740002
24 5188376
25 7121305
26 9687674
27 13044961
28 17402217
29 23026128
30 30200375
31 39290567
32 50744867
33 65045752
34 82799083

List of values

[1, 2, 10, 30, 111, 296, 711, 1625, 3583, 7088, 13377, 24143, 41376, 68551, 111068, 174887, 269592, 410043, 612350, 900484, 1310108, 1879862, 2664399, 3740002, 5188376, 7121305, 9687674, 13044961, 17402217, 23026128, 30200375, 39290567, 50744867, 65045752, 82799083]