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.

A245415 Number of nonnegative integers with property that their base 5/2 expansion (see A024632) has n digits.

Table of values

n a(n)
1 5
2 10
3 25
4 60
5 150
6 375
7 940
8 2350
9 5875
10 14685
11 36715
12 91785
13 229465
14 573660
15 1434150
16 3585375
17 8963440
18 22408600
19 56021500
20 140053750
21 350134375
22 875335935
23 2188339840
24 5470849600
25 13677124000
26 34192810000
27 85482025000
28 213705062500
29 534262656250

List of values

[5, 10, 25, 60, 150, 375, 940, 2350, 5875, 14685, 36715, 91785, 229465, 573660, 1434150, 3585375, 8963440, 22408600, 56021500, 140053750, 350134375, 875335935, 2188339840, 5470849600, 13677124000, 34192810000, 85482025000, 213705062500, 534262656250]