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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.

A282080 Number of n-element subsets of [n+4] having an even sum.

Table of values

n a(n)
0 1
1 2
2 6
3 19
4 38
5 60
6 100
7 170
8 255
9 350
10 490
11 693
12 924
13 1176
14 1512
15 1956
16 2445
17 2970
18 3630
19 4455
20 5346
21 6292
22 7436
23 8814
24 10283
25 11830
26 13650
27 15785
28 18040
29 20400
30 23120
31 26248
32 29529
33 32946
34 36822
35 41211
36 45790
37 50540
38 55860
39 61810
40 67991
41 74382
42 81466
43 89309

List of values

[1, 2, 6, 19, 38, 60, 100, 170, 255, 350, 490, 693, 924, 1176, 1512, 1956, 2445, 2970, 3630, 4455, 5346, 6292, 7436, 8814, 10283, 11830, 13650, 15785, 18040, 20400, 23120, 26248, 29529, 32946, 36822, 41211, 45790, 50540, 55860, 61810, 67991, 74382, 81466, 89309]

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

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