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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.

A215859 Number of simple labeled graphs on n nodes with exactly 9 connected components that are trees or cycles.

Table of values

n a(n)
9 1
10 45
11 1650
12 54945
13 1795794
14 59546487
15 2043490735
16 73415619420
17 2779264615127
18 111226656560877
19 4710924208619304
20 211105699482022215
21 9997623229700175712
22 499562336689773070263
23 26288415481415803589236
24 1454007169289989503463230
25 84361156450441837460650255

List of values

[1, 45, 1650, 54945, 1795794, 59546487, 2043490735, 73415619420, 2779264615127, 111226656560877, 4710924208619304, 211105699482022215, 9997623229700175712, 499562336689773070263, 26288415481415803589236, 1454007169289989503463230, 84361156450441837460650255]

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

Content is available under The OEIS End-User License Agreement.