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.

A237575 Fibonacci-like numbers with nonincreasing positive digits. Let a** denote the number that is obtained from a if its digits are written in nonincreasing order. Let a<+>b = (a + b)**. a(0)=0, a(1)=1, for n>=2, a(n) = a(n-1) <+> a(n-2).

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 3
5 5
6 8
7 31
8 93
9 421
10 541
11 962
12 5310
13 7622
14 93221
15 843100
16 963321
17 8642110
18 9654310
19 98642210
20 986522100
21 8654311100
22 9864332000
23 88654311100
24 98865431100
25 987754221100
26 9866652211000
27 86544432110000
28 98644321110000
29 888755322110000

List of values

[0, 1, 1, 2, 3, 5, 8, 31, 93, 421, 541, 962, 5310, 7622, 93221, 843100, 963321, 8642110, 9654310, 98642210, 986522100, 8654311100, 9864332000, 88654311100, 98865431100, 987754221100, 9866652211000, 86544432110000, 98644321110000, 888755322110000]