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.

A104805 "Ceiling of hypotenuses": a(n) = ceiling(sqrt(a(n-1)^2 + a(n-2)^2)), a(1)=1, a(2)=3.

Table of values

n a(n)
1 1
2 3
3 4
4 5
5 7
6 9
7 12
8 15
9 20
10 25
11 33
12 42
13 54
14 69
15 88
16 112
17 143
18 182
19 232
20 295
21 376
22 478
23 609
24 775
25 986
26 1255
27 1597
28 2032
29 2585
30 3289
31 4184
32 5322
33 6770
34 8612
35 10955
36 13935
37 17726
38 22548
39 28682
40 36484
41 46409
42 59033
43 75092
44 95519
45 121502
46 154553
47 196595
48 250073

List of values

[1, 3, 4, 5, 7, 9, 12, 15, 20, 25, 33, 42, 54, 69, 88, 112, 143, 182, 232, 295, 376, 478, 609, 775, 986, 1255, 1597, 2032, 2585, 3289, 4184, 5322, 6770, 8612, 10955, 13935, 17726, 22548, 28682, 36484, 46409, 59033, 75092, 95519, 121502, 154553, 196595, 250073]