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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.

A238697 Quotients connected with the Banach matchboxes problem: Sum_{i=1..prime(n)-7} 2^(i-1)*binomial(i+2,3)/prime(n) (case 3).

Table of values

n a(n)
4 0
5 19
6 197
7 10481
8 64027
9 1980327
10 259179061
11 1257208799
12 131286703021
13 2756321451033
14 12473384091267
15 250290955437775
16 21588599628845597
17 1792050990708087027
18 7763319803561678613
19 620323392829436218475
20 11365013042482773469559
21 48487140450183407727097

List of values

[0, 19, 197, 10481, 64027, 1980327, 259179061, 1257208799, 131286703021, 2756321451033, 12473384091267, 250290955437775, 21588599628845597, 1792050990708087027, 7763319803561678613, 620323392829436218475, 11365013042482773469559, 48487140450183407727097]

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

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