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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.

A242496 a(n)=sum_{j=0..n} sum_{i=0..j} F(i)*L(j), where F(n)=A000045(n) and L(n)=A000032(n).

Table of values

n a(n)
0 0
1 1
2 7
3 23
4 72
5 204
6 564
7 1521
8 4059
9 10747
10 28336
11 74504
12 195576
13 512865
14 1344063
15 3521007
16 9221688
17 24148468
18 63230860
19 165555665
20 433454835
21 1134839091
22 2971111392
23 7778574288
24 20364739632
25 53315851969
26 139583151799
27 365434146311
28 956720165544

List of values

[0, 1, 7, 23, 72, 204, 564, 1521, 4059, 10747, 28336, 74504, 195576, 512865, 1344063, 3521007, 9221688, 24148468, 63230860, 165555665, 433454835, 1134839091, 2971111392, 7778574288, 20364739632, 53315851969, 139583151799, 365434146311, 956720165544]

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

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