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.

A370212 Coefficient of x^n in the expansion of ( (1+x) / (1-x^3) )^n.

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 17
5 51
6 142
7 442
8 1457
9 4702
10 14951
11 48038
12 156158
13 508860
14 1658112
15 5414754
16 17735473
17 58209803
18 191310964
19 629605300
20 2074916167
21 6846553375
22 22615507300
23 74775856026
24 247463508542
25 819645776926
26 2716912851446
27 9012261102106
28 29914317146864

List of values

[1, 1, 1, 4, 17, 51, 142, 442, 1457, 4702, 14951, 48038, 156158, 508860, 1658112, 5414754, 17735473, 58209803, 191310964, 629605300, 2074916167, 6846553375, 22615507300, 74775856026, 247463508542, 819645776926, 2716912851446, 9012261102106, 29914317146864]

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

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