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.

A250741 Number of (n+1) X (7+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)
1 258
2 262
3 270
4 286
5 318
6 382
7 510
8 766
9 1278
10 2302
11 4350
12 8446
13 16638
14 33022
15 65790
16 131326
17 262398
18 524542
19 1048830
20 2097406
21 4194558
22 8388862
23 16777470
24 33554686
25 67109118
26 134217982
27 268435710
28 536871166
29 1073742078
30 2147483902
31 4294967550
32 8589934846
33 17179869438

List of values

[258, 262, 270, 286, 318, 382, 510, 766, 1278, 2302, 4350, 8446, 16638, 33022, 65790, 131326, 262398, 524542, 1048830, 2097406, 4194558, 8388862, 16777470, 33554686, 67109118, 134217982, 268435710, 536871166, 1073742078, 2147483902, 4294967550, 8589934846, 17179869438]

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

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