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.

A048437 Take the first n numbers written in base 5, concatenate them, then convert from base 5 to base 10.

Table of values

n a(n)
1 1
2 7
3 38
4 194
5 4855
6 121381
7 3034532
8 75863308
9 1896582709
10 47414567735
11 1185364193386
12 29634104834662
13 740852620866563
14 18521315521664089
15 463032888041602240
16 11575822201040056016
17 289395555026001400417
18 7234888875650035010443
19 180872221891250875261094

List of values

[1, 7, 38, 194, 4855, 121381, 3034532, 75863308, 1896582709, 47414567735, 1185364193386, 29634104834662, 740852620866563, 18521315521664089, 463032888041602240, 11575822201040056016, 289395555026001400417, 7234888875650035010443, 180872221891250875261094]