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.

A245416 Number of nonnegative integers with property that their base 9/2 expansion (see A024650) has n digits.

Table of values

n a(n)
1 9
2 36
3 162
4 729
5 3276
6 14742
7 66339
8 298530
9 1343385
10 6045228
11 27203526
12 122415867
13 550871406
14 2478921327
15 11155145967
16 50198156856
17 225891705852
18 1016512676334
19 4574307043503
20 20584381695759
21 92629717630920
22 416833729339140
23 1875751782026130

List of values

[9, 36, 162, 729, 3276, 14742, 66339, 298530, 1343385, 6045228, 27203526, 122415867, 550871406, 2478921327, 11155145967, 50198156856, 225891705852, 1016512676334, 4574307043503, 20584381695759, 92629717630920, 416833729339140, 1875751782026130]

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

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