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.

A073961 Let R be the polynomial ring GF(2)[x]. Then a(n) = number of distinct products f*g with f,g in R and 1 <= deg(f),deg(g) <= n.

Table of values

n a(n)
1 3
2 18
3 72
4 262
5 975
6 3562
7 13456
8 50765
9 194122
10 745526
11 2882670
12 11173191
13 43485970
14 169656399
15 663259282
16 2598327983
17 10190686903
18 40038932993
19 157431481559
20 619871680780
21 2442107519364
22 9632769554849
23 38008189079970
24 150127212826428
25 593141913076502

List of values

[3, 18, 72, 262, 975, 3562, 13456, 50765, 194122, 745526, 2882670, 11173191, 43485970, 169656399, 663259282, 2598327983, 10190686903, 40038932993, 157431481559, 619871680780, 2442107519364, 9632769554849, 38008189079970, 150127212826428, 593141913076502]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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