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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.

A293574 a(n) = Sum_{k=0..n} n^(n-k)*binomial(n+k-1,k).

Table of values

n a(n)
0 1
1 2
2 11
3 82
4 787
5 9476
6 139134
7 2422218
8 48824675
9 1118286172
10 28679699578
11 814027423892
12 25330145185646
13 857375286365768
14 31360145331198428
15 1232586016712594010
16 51805909208539809315
17 2318588202311267591852
18 110085368092924083334626
19 5526615354023679440754396
20 292501304641192746350100410

List of values

[1, 2, 11, 82, 787, 9476, 139134, 2422218, 48824675, 1118286172, 28679699578, 814027423892, 25330145185646, 857375286365768, 31360145331198428, 1232586016712594010, 51805909208539809315, 2318588202311267591852, 110085368092924083334626, 5526615354023679440754396, 292501304641192746350100410]

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

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