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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.

A318053 a(n) = ceiling(sqrt(2*a(n-1)*a(n-2))), a(1) = a(2) = 1.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 3
6 4
7 5
8 7
9 9
10 12
11 15
12 19
13 24
14 31
15 39
16 50
17 63
18 80
19 101
20 128
21 161
22 204
23 257
24 324
25 409
26 515
27 650
28 819
29 1032
30 1301
31 1639
32 2066
33 2603
34 3280
35 4133
36 5207
37 6561
38 8266
39 10415
40 13122
41 16533
42 20831
43 26245
44 33067
45 41662
46 52491
47 66135
48 83325

List of values

[1, 1, 2, 2, 3, 4, 5, 7, 9, 12, 15, 19, 24, 31, 39, 50, 63, 80, 101, 128, 161, 204, 257, 324, 409, 515, 650, 819, 1032, 1301, 1639, 2066, 2603, 3280, 4133, 5207, 6561, 8266, 10415, 13122, 16533, 20831, 26245, 33067, 41662, 52491, 66135, 83325]

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

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