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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.

A273510 a(n) is the largest level N such that genus of modular curve X_0(N) is n (or -1 if no such curve exists).

Table of values

n a(n)
0 25
1 49
2 50
3 64
4 81
5 75
6 121
7 100
8 169
9 128
10 127
11 147
12 157
13 163
14 181
15 193
16 199
17 289
18 229
19 243
20 239
21 257
22 361
23 283
24 293
25 313
26 343
27 337
28 349
29 353
30 373
31 379
32 397
33 409
34 421
35 529
36 439
37 457
38 463
39 467
40 487
41 499
42 509
43 523
44 541
45 547
46 557
47 577
48 625
49 601
50 613
51 619
52 631
53 643
54 661
55 673
56 677
57 691
58 841
59 667
60 733

List of values

[25, 49, 50, 64, 81, 75, 121, 100, 169, 128, 127, 147, 157, 163, 181, 193, 199, 289, 229, 243, 239, 257, 361, 283, 293, 313, 343, 337, 349, 353, 373, 379, 397, 409, 421, 529, 439, 457, 463, 467, 487, 499, 509, 523, 541, 547, 557, 577, 625, 601, 613, 619, 631, 643, 661, 673, 677, 691, 841, 667, 733]

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

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