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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.

A146977 a(n) = Sum_{k=1..prime(n)} binomial(2k,k).

Table of values

n a(n)
1 8
2 28
3 350
4 4706
5 956384
6 14061140
7 3143981870
8 47564380970
9 11061198475550
10 40328534467494098
11 624021469287616610
12 2338958497948612884092
13 568740383597968804344752
14 8885203954833615367662872
15 2175457720411301277807088352
16 8390179243143767727343229863076

List of values

[8, 28, 350, 4706, 956384, 14061140, 3143981870, 47564380970, 11061198475550, 40328534467494098, 624021469287616610, 2338958497948612884092, 568740383597968804344752, 8885203954833615367662872, 2175457720411301277807088352, 8390179243143767727343229863076]

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

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