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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.

A224141 Number of n X 3 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.

Table of values

n a(n)
1 7
2 22
3 49
4 92
5 155
6 242
7 357
8 504
9 687
10 910
11 1177
12 1492
13 1859
14 2282
15 2765
16 3312
17 3927
18 4614
19 5377
20 6220
21 7147
22 8162
23 9269
24 10472
25 11775
26 13182
27 14697
28 16324
29 18067
30 19930
31 21917
32 24032
33 26279
34 28662
35 31185
36 33852
37 36667
38 39634
39 42757
40 46040
41 49487
42 53102

List of values

[7, 22, 49, 92, 155, 242, 357, 504, 687, 910, 1177, 1492, 1859, 2282, 2765, 3312, 3927, 4614, 5377, 6220, 7147, 8162, 9269, 10472, 11775, 13182, 14697, 16324, 18067, 19930, 21917, 24032, 26279, 28662, 31185, 33852, 36667, 39634, 42757, 46040, 49487, 53102]

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

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