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.

A131655 Maximal number of different numbers that can be formed from n numbers using addition, subtraction, multiplication and division, when each number is used no more than once in a given expression.

Table of values

n a(n)
1 1
2 8
3 89
4 1482
5 33737
6 974860
7 34078585
8 1397335710
9 65753020657
10 3493075453208
11 206827445591945
12 13508998509463890
13 965035059918868889
14 74859785094041370724
15 6267261735949374860857
16 563289843479215734940710
17 54100963704277853262416833

List of values

[1, 8, 89, 1482, 33737, 974860, 34078585, 1397335710, 65753020657, 3493075453208, 206827445591945, 13508998509463890, 965035059918868889, 74859785094041370724, 6267261735949374860857, 563289843479215734940710, 54100963704277853262416833]