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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.

A327467 a(n) = smallest k such that n can be expressed as a signed sum of the first k primes.

Table of values

n a(n)
0 3
1 2
2 1
3 4
4 3
5 2
6 3
7 4
8 5
9 6
10 3
11 4
12 5
13 4
14 5
15 6
16 7
17 4
18 5
19 6
20 7
21 6
22 5
23 6
24 5
25 6
26 7
27 6
28 5
29 8
30 7
31 6
32 7
33 8
34 7
35 6
36 7
37 6
38 7
39 8
40 7
41 6
42 7
43 8
44 7
45 8
46 9
47 8
48 7
49 8
50 9
51 8
52 7
53 8
54 7
55 8
56 9
57 8
58 7
59 8
60 9
61 8
62 9
63 8
64 9
65 10
66 9
67 8
68 9
69 10
70 9
71 8
72 9
73 8
74 9
75 10
76 9
77 8
78 9
79 10
80 9
81 10
82 9
83 10
84 9
85 10

List of values

[3, 2, 1, 4, 3, 2, 3, 4, 5, 6, 3, 4, 5, 4, 5, 6, 7, 4, 5, 6, 7, 6, 5, 6, 5, 6, 7, 6, 5, 8, 7, 6, 7, 8, 7, 6, 7, 6, 7, 8, 7, 6, 7, 8, 7, 8, 9, 8, 7, 8, 9, 8, 7, 8, 7, 8, 9, 8, 7, 8, 9, 8, 9, 8, 9, 10, 9, 8, 9, 10, 9, 8, 9, 8, 9, 10, 9, 8, 9, 10, 9, 10, 9, 10, 9, 10]

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

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