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.

A079862 a(i) = the number of occurrences of 9's in the palindromic compositions of n=2*i-1 = the number of occurrences of 10's in the palindromic compositions of n=2*i.

Table of values

n a(n)
10 18
11 38
12 80
13 168
14 352
15 736
16 1536
17 3200
18 6656
19 13824
20 28672
21 59392
22 122880
23 253952
24 524288
25 1081344
26 2228224
27 4587520
28 9437184
29 19398656
30 39845888
31 81788928
32 167772160
33 343932928
34 704643072
35 1442840576
36 2952790016
37 6039797760
38 12348030976
39 25232932864

List of values

[18, 38, 80, 168, 352, 736, 1536, 3200, 6656, 13824, 28672, 59392, 122880, 253952, 524288, 1081344, 2228224, 4587520, 9437184, 19398656, 39845888, 81788928, 167772160, 343932928, 704643072, 1442840576, 2952790016, 6039797760, 12348030976, 25232932864]