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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.

A010980 a(n) = binomial(n,27).

Table of values

n a(n)
27 1
28 28
29 406
30 4060
31 31465
32 201376
33 1107568
34 5379616
35 23535820
36 94143280
37 348330136
38 1203322288
39 3910797436
40 12033222880
41 35240152720
42 98672427616
43 265182149218
44 686353797976
45 1715884494940
46 4154246671960
47 9762479679106
48 22314239266528
49 49699896548176

List of values

[1, 28, 406, 4060, 31465, 201376, 1107568, 5379616, 23535820, 94143280, 348330136, 1203322288, 3910797436, 12033222880, 35240152720, 98672427616, 265182149218, 686353797976, 1715884494940, 4154246671960, 9762479679106, 22314239266528, 49699896548176]

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

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