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.

A249002 Number of length 1+4 0..n arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two.

Table of values

n a(n)
1 30
2 190
3 820
4 2540
5 6450
6 13990
7 27740
8 50260
9 86030
10 139450
11 217320
12 325940
13 475630
14 674650
15 937020
16 1274160
17 1703970
18 2240850
19 2908260
20 3723400
21 4715230
22 5905430
23 7328400
24 9009880
25 10991870
26 13303750
27 15994820
28 19100260
29 22676370

List of values

[30, 190, 820, 2540, 6450, 13990, 27740, 50260, 86030, 139450, 217320, 325940, 475630, 674650, 937020, 1274160, 1703970, 2240850, 2908260, 3723400, 4715230, 5905430, 7328400, 9009880, 10991870, 13303750, 15994820, 19100260, 22676370]

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

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