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.

A250728 Number of (n+1)X(7+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Table of values

n a(n)
1 1302
2 3173
3 6257
4 11377
5 19887
6 34069
7 57397
8 95231
9 155263
10 248537
11 390263
12 601256
13 909242
14 1350837
15 1973466
16 2838027
17 4021571
18 5620807
19 7755707
20 10574024
21 14256002
22 19020095
23 25128978
24 32896671
25 42696063
26 54967661
27 70228855
28 89084528

List of values

[1302, 3173, 6257, 11377, 19887, 34069, 57397, 95231, 155263, 248537, 390263, 601256, 909242, 1350837, 1973466, 2838027, 4021571, 5620807, 7755707, 10574024, 14256002, 19020095, 25128978, 32896671, 42696063, 54967661, 70228855, 89084528]

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

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