cp's OEIS Frontend

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.

A051656 Sum_{i=0..n} (C(n,i) mod 2)*Fibonacci(2*i).

Table of values

n a(n)
0 0
1 1
2 3
3 12
4 21
5 77
6 168
7 609
8 987
9 3572
10 7755
11 28059
12 47376
13 171409
14 372099
15 1346268
16 2178309
17 7881197
18 17108664
19 61899729
20 104512485
21 378129724
22 820851717
23 2969869413
24 4809706272
25 17401680769
26 37775923491
27 136674575148

List of values

[0, 1, 3, 12, 21, 77, 168, 609, 987, 3572, 7755, 28059, 47376, 171409, 372099, 1346268, 2178309, 7881197, 17108664, 61899729, 104512485, 378129724, 820851717, 2969869413, 4809706272, 17401680769, 37775923491, 136674575148]