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.

A357549 a(n) = floor( Sum_{k=0..n-1} n^k / (k! * a(k)) ), for n > 0 with a(0) = 1.

Table of values

n a(n)
0 1
1 1
2 3
3 5
4 9
5 17
6 30
7 52
8 91
9 161
10 285
11 503
12 889
13 1573
14 2782
15 4920
16 8697
17 15368
18 27146
19 47928
20 84590
21 149246
22 263247
23 464214
24 818445
25 1442762
26 2543025
27 4482001
28 7898979
29 13920609
30 24532535
31 43234510
32 76195273
33 134288583
34 236682848
35 417170144
36 735325596
37 1296184444

List of values

[1, 1, 3, 5, 9, 17, 30, 52, 91, 161, 285, 503, 889, 1573, 2782, 4920, 8697, 15368, 27146, 47928, 84590, 149246, 263247, 464214, 818445, 1442762, 2543025, 4482001, 7898979, 13920609, 24532535, 43234510, 76195273, 134288583, 236682848, 417170144, 735325596, 1296184444]