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.

A101892 a(n) = Sum_{k=0..floor(n/2)} binomial(n,2*k)*J(k), where J = A001045.

Table of values

n a(n)
0 0
1 0
2 1
3 3
4 7
5 15
6 33
7 77
8 187
9 459
10 1121
11 2717
12 6555
13 15795
14 38081
15 91893
16 221867
17 535755
18 1293633
19 3123277
20 7540187
21 18203139
22 43945441
23 106092997
24 256131435
25 618357915
26 1492851361
27 3604064733
28 8700980827
29 21006018195
30 50713000833

List of values

[0, 0, 1, 3, 7, 15, 33, 77, 187, 459, 1121, 2717, 6555, 15795, 38081, 91893, 221867, 535755, 1293633, 3123277, 7540187, 18203139, 43945441, 106092997, 256131435, 618357915, 1492851361, 3604064733, 8700980827, 21006018195, 50713000833]