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.

A262903 Numbers that are not leaves but all of whose children are leaves in the tree generated by edge-relation A049820(child) = parent.

Table of values

n a(n)
1 4
2 5
3 14
4 16
5 32
6 41
7 44
8 77
9 80
10 92
11 101
12 110
13 119
14 128
15 139
16 148
17 158
18 161
19 169
20 176
21 191
22 192
23 199
24 215
25 224
26 227
27 234
28 238
29 249
30 262
31 264
32 277
33 296
34 311
35 317
36 327
37 350
38 351
39 352
40 360
41 363
42 382
43 385
44 389
45 392
46 395
47 396
48 411
49 427
50 430
51 437
52 448
53 449
54 461
55 464
56 483
57 488
58 518
59 523
60 531
61 532
62 542
63 552
64 561
65 568
66 570
67 577
68 579
69 600
70 601
71 613
72 619
73 632
74 634
75 636
76 645
77 648
78 659
79 665
80 666
81 671
82 682
83 683
84 696
85 705
86 723

List of values

[4, 5, 14, 16, 32, 41, 44, 77, 80, 92, 101, 110, 119, 128, 139, 148, 158, 161, 169, 176, 191, 192, 199, 215, 224, 227, 234, 238, 249, 262, 264, 277, 296, 311, 317, 327, 350, 351, 352, 360, 363, 382, 385, 389, 392, 395, 396, 411, 427, 430, 437, 448, 449, 461, 464, 483, 488, 518, 523, 531, 532, 542, 552, 561, 568, 570, 577, 579, 600, 601, 613, 619, 632, 634, 636, 645, 648, 659, 665, 666, 671, 682, 683, 696, 705, 723]