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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.

A377295 a(n) is the least n-digit prime which is the sum of the squares of six consecutive nonnegative numbers, or -1 if no such prime exists.

Table of values

n a(n)
1 -1
2 -1
3 139
4 1279
5 15319
6 102199
7 1011079
8 10054399
9 100687891
10 1000860859
11 10004248351
12 100048116199
13 1000245990631
14 10000171206199
15 100000029166651
16 1000000001958499
17 10000010020185919
18 100000022659152859
19 1000000088358667051
20 10000000476596855539
21 100000000728055460899

List of values

[-1, -1, 139, 1279, 15319, 102199, 1011079, 10054399, 100687891, 1000860859, 10004248351, 100048116199, 1000245990631, 10000171206199, 100000029166651, 1000000001958499, 10000010020185919, 100000022659152859, 1000000088358667051, 10000000476596855539, 100000000728055460899]

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

Content is available under The OEIS End-User License Agreement.