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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.

A056234 Form an array with 3 rows: row 1 begins with 1; all rows are increasing; each entry is sum of 2 entries above it; each number appears at most once; smallest unused number is appended to first row if possible. Sequence gives numbers not used.

Table of values

n a(n)
1 5
2 24
3 29
4 42
5 72
6 90
7 93
8 112
9 120
10 125
11 138
12 158
13 172
14 175
15 192
16 197
17 200
18 205
19 208
20 213
21 218
22 230
23 235
24 264
25 282
26 285
27 302
28 305
29 310
30 321
31 324
32 329
33 333
34 364
35 372
36 375
37 378
38 386
39 416
40 430
41 439
42 452
43 455
44 477
45 496
46 504
47 509
48 522
49 542
50 556

List of values

[5, 24, 29, 42, 72, 90, 93, 112, 120, 125, 138, 158, 172, 175, 192, 197, 200, 205, 208, 213, 218, 230, 235, 264, 282, 285, 302, 305, 310, 321, 324, 329, 333, 364, 372, 375, 378, 386, 416, 430, 439, 452, 455, 477, 496, 504, 509, 522, 542, 556]

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

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