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.

A370254 a(0) = 1, a(n) = result of eliminating the digit 7 from the sum of all previous terms for n>=1.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 8
5 16
6 32
7 64
8 128
9 256
10 512
11 1024
12 2048
13 4096
14 8192
15 16384
16 3268
17 36036
18 202
19 224
20 2498
21 4996
22 9992
23 89984
24 19968
25 199936
26 39982
27 439854
28 8908
29 888616
30 1232
31 18464
32 196928
33 1993856
34 39812
35 402524
36 4430048
37 8860096
38 120192
39 1840384
40 1968068

List of values

[1, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 3268, 36036, 202, 224, 2498, 4996, 9992, 89984, 19968, 199936, 39982, 439854, 8908, 888616, 1232, 18464, 196928, 1993856, 39812, 402524, 4430048, 8860096, 120192, 1840384, 1968068]