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.

A245417 Number of nonnegative integers with property that their base 7/3 expansion (see A024640) has n digits.

Table of values

n a(n)
1 7
2 14
3 28
4 70
5 161
6 378
7 882
8 2058
9 4802
10 11200
11 26138
12 60984
13 142296
14 332024
15 774725
16 1807694
17 4217948
18 9841881
19 22964389
20 53583572
21 125028337
22 291732784
23 680709834
24 1588322946
25 3706086874
26 8647536037
27 20177584084
28 47081029534
29 109855735577
30 256330049682

List of values

[7, 14, 28, 70, 161, 378, 882, 2058, 4802, 11200, 26138, 60984, 142296, 332024, 774725, 1807694, 4217948, 9841881, 22964389, 53583572, 125028337, 291732784, 680709834, 1588322946, 3706086874, 8647536037, 20177584084, 47081029534, 109855735577, 256330049682]

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

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