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.

A287484 Number of squarefree k with A002110(n) <= k < A002110(n+1) such that A001221(k) = n.

Table of values

n a(n)
0 1
1 3
2 7
3 19
4 58
5 152
6 422
7 995
8 2359
9 6294
10 14507
11 36370
12 88198
13 187786
14 386993
15 840033
16 1901930
17 3851372
18 8088478
19 16388857
20 30001902
21 56613547
22 103229263
23 193020113
24 389750880
25 759988983
26 1359250012
27 2350842201
28 3737393021
29 5748044055
30 10843131073
31 19774152370

List of values

[1, 3, 7, 19, 58, 152, 422, 995, 2359, 6294, 14507, 36370, 88198, 187786, 386993, 840033, 1901930, 3851372, 8088478, 16388857, 30001902, 56613547, 103229263, 193020113, 389750880, 759988983, 1359250012, 2350842201, 3737393021, 5748044055, 10843131073, 19774152370]

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

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