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.

A198442 Number of sequences of n coin flips that win on the last flip, if the sequence of flips ends with (1,1,0) or (1,0,0).

Table of values

n a(n)
1 0
2 0
3 2
4 3
5 6
6 8
7 12
8 15
9 20
10 24
11 30
12 35
13 42
14 48
15 56
16 63
17 72
18 80
19 90
20 99
21 110
22 120
23 132
24 143
25 156
26 168
27 182
28 195
29 210
30 224
31 240
32 255
33 272
34 288
35 306
36 323
37 342
38 360
39 380
40 399
41 420
42 440
43 462
44 483
45 506
46 528
47 552
48 575
49 600
50 624
51 650
52 675
53 702
54 728
55 756
56 783
57 812

List of values

[0, 0, 2, 3, 6, 8, 12, 15, 20, 24, 30, 35, 42, 48, 56, 63, 72, 80, 90, 99, 110, 120, 132, 143, 156, 168, 182, 195, 210, 224, 240, 255, 272, 288, 306, 323, 342, 360, 380, 399, 420, 440, 462, 483, 506, 528, 552, 575, 600, 624, 650, 675, 702, 728, 756, 783, 812]

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

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