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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.

A219672 a(n) = Sum_{k=0..n} binomial(n,k)^2*Fibonacci(k).

Table of values

n a(n)
0 0
1 1
2 5
3 20
4 87
5 405
6 1924
7 9225
8 44625
9 217528
10 1066725
11 5256087
12 26001000
13 129053365
14 642376709
15 3205403100
16 16029187391
17 80309053285
18 403040543420
19 2025751379997
20 10195547237235
21 51376594943136
22 259180112907875
23 1308811957775785
24 6615383878581072

List of values

[0, 1, 5, 20, 87, 405, 1924, 9225, 44625, 217528, 1066725, 5256087, 26001000, 129053365, 642376709, 3205403100, 16029187391, 80309053285, 403040543420, 2025751379997, 10195547237235, 51376594943136, 259180112907875, 1308811957775785, 6615383878581072]

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

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