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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.

A087316 a(n) = Sum_{k=1..n} prime(k)^prime(n-k+1).

Table of values

n a(n)
1 4
2 17
3 84
4 545
5 7824
6 281771
7 51540600
8 3347558057
9 1146374959980
10 288113965730819
11 529172633067826888
12 283453407513524913023
13 4122282265785671687518812
14 1586581830624893452605127040309
15 412109111737176949907195758658736

List of values

[4, 17, 84, 545, 7824, 281771, 51540600, 3347558057, 1146374959980, 288113965730819, 529172633067826888, 283453407513524913023, 4122282265785671687518812, 1586581830624893452605127040309, 412109111737176949907195758658736]

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

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