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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.

A216696 a(n) = Sum_{k=0..n} binomial(n,k)^4 * 2^k.

Table of values

n a(n)
0 1
1 3
2 37
3 495
4 7761
5 131283
6 2336629
7 43174911
8 819869185
9 15906350403
10 313905320037
11 6281740700271
12 127173173346129
13 2599950664710675
14 53601450936173877
15 1113117091905581055
16 23262762639358582785
17 488890438209132473475
18 10325711607889973605285
19 219057502101780979753455

List of values

[1, 3, 37, 495, 7761, 131283, 2336629, 43174911, 819869185, 15906350403, 313905320037, 6281740700271, 127173173346129, 2599950664710675, 53601450936173877, 1113117091905581055, 23262762639358582785, 488890438209132473475, 10325711607889973605285, 219057502101780979753455]

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

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