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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.

A200196 Number of -n..n arrays x(0..6) of 7 elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.

Table of values

n a(n)
1 0
2 104
3 1534
4 9856
5 40632
6 127800
7 334278
8 765598
9 1585416
10 3034396
11 5450616
12 9293800
13 15170448
14 23863548
15 36362438
16 53897896
17 77976766
18 110422568
19 153414642
20 209534448
21 281809258
22 373763982
23 489469484
24 633600106
25 811486280

List of values

[0, 104, 1534, 9856, 40632, 127800, 334278, 765598, 1585416, 3034396, 5450616, 9293800, 15170448, 23863548, 36362438, 53897896, 77976766, 110422568, 153414642, 209534448, 281809258, 373763982, 489469484, 633600106, 811486280]

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

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