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.

A280731 Lexicographically least strictly increasing sequence such that, for any n>0, Sum_{k=1..n} a(k) can be computed without carries in base 9 (the numbers are written in base 10).

Table of values

n a(n)
1 1
2 2
3 3
4 9
5 10
6 18
7 19
8 81
9 90
10 162
11 171
12 729
13 810
14 1458
15 1539
16 6561
17 7290
18 13122
19 13851
20 59049
21 65610
22 118098
23 124659
24 531441
25 590490
26 1062882
27 1121931
28 4782969
29 5314410
30 9565938
31 10097379
32 43046721
33 47829690
34 86093442
35 90876411
36 387420489
37 430467210

List of values

[1, 2, 3, 9, 10, 18, 19, 81, 90, 162, 171, 729, 810, 1458, 1539, 6561, 7290, 13122, 13851, 59049, 65610, 118098, 124659, 531441, 590490, 1062882, 1121931, 4782969, 5314410, 9565938, 10097379, 43046721, 47829690, 86093442, 90876411, 387420489, 430467210]