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.

A230978 a(n) = (A220500(n) - 1)/2.

Table of values

n a(n)
1 0
2 2
3 6
4 14
5 25
6 37
7 49
8 67
9 87
10 103
11 125
12 157
13 204
14 240
15 268
16 306
17 342
18 358
19 382
20 422
21 478
22 548
23 618
24 688
25 772
26 832
27 898
28 982
29 1101
30 1185
31 1245
32 1323
33 1391
34 1407
35 1431
36 1471
37 1527
38 1597
39 1669
40 1751
41 1863
42 1971
43 2099
44 2235
45 2419
46 2581
47 2739
48 2879
49 3027
50 3107
51 3182
52 3298
53 3458
54 3660
55 3876
56 4080

List of values

[0, 2, 6, 14, 25, 37, 49, 67, 87, 103, 125, 157, 204, 240, 268, 306, 342, 358, 382, 422, 478, 548, 618, 688, 772, 832, 898, 982, 1101, 1185, 1245, 1323, 1391, 1407, 1431, 1471, 1527, 1597, 1669, 1751, 1863, 1971, 2099, 2235, 2419, 2581, 2739, 2879, 3027, 3107, 3182, 3298, 3458, 3660, 3876, 4080]

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

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