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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.

A258416 Number of partitions of the 2-dimensional hypercube resulting from a sequence of n bisections, each of which splits any part perpendicular to any of the axes, such that each axis is used at least once.

Table of values

n a(n)
2 4
3 29
4 184
5 1148
6 7228
7 46224
8 300476
9 1983102
10 13266032
11 89795420
12 614058228
13 4236652416
14 29457698192
15 206215486597
16 1452248529432
17 10281676045348
18 73137772914324
19 522472109334560
20 3746685545297640
21 26961148855455180
22 194626321451800800
23 1409026233004925340

List of values

[4, 29, 184, 1148, 7228, 46224, 300476, 1983102, 13266032, 89795420, 614058228, 4236652416, 29457698192, 206215486597, 1452248529432, 10281676045348, 73137772914324, 522472109334560, 3746685545297640, 26961148855455180, 194626321451800800, 1409026233004925340]

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

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