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.

A036219 Expansion of 1/(1-3*x)^6; 6-fold convolution of A000244 (powers of 3).

Table of values

n a(n)
0 1
1 18
2 189
3 1512
4 10206
5 61236
6 336798
7 1732104
8 8444007
9 39405366
10 177324147
11 773778096
12 3288556908
13 13660159464
14 55616363532
15 222465454128
16 875957725629
17 3400777052442
18 13036312034361
19 49400761393368
20 185252855225130
21 688082033693340
22 2533392942234570

List of values

[1, 18, 189, 1512, 10206, 61236, 336798, 1732104, 8444007, 39405366, 177324147, 773778096, 3288556908, 13660159464, 55616363532, 222465454128, 875957725629, 3400777052442, 13036312034361, 49400761393368, 185252855225130, 688082033693340, 2533392942234570]

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

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