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.

A250739 Number of (n+1) X (5+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nonincreasing x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 66
2 70
3 78
4 94
5 126
6 190
7 318
8 574
9 1086
10 2110
11 4158
12 8254
13 16446
14 32830
15 65598
16 131134
17 262206
18 524350
19 1048638
20 2097214
21 4194366
22 8388670
23 16777278
24 33554494
25 67108926
26 134217790
27 268435518
28 536870974
29 1073741886
30 2147483710
31 4294967358

List of values

[66, 70, 78, 94, 126, 190, 318, 574, 1086, 2110, 4158, 8254, 16446, 32830, 65598, 131134, 262206, 524350, 1048638, 2097214, 4194366, 8388670, 16777278, 33554494, 67108926, 134217790, 268435518, 536870974, 1073741886, 2147483710, 4294967358]

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

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