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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.

A386767 a(n) = Sum_{k=0..n} 5^k * 2^(n-k) * binomial(2*n+k-1,k).

Table of values

n a(n)
0 1
1 12
2 294
3 8178
4 240186
5 7271832
6 224484684
7 7024333608
8 221997758346
9 7069839153252
10 226514542354974
11 7293106513777338
12 235771657829954856
13 7648097463209959872
14 248816951694728297664
15 8115177647328907792368
16 265257523746851227499466
17 8687091365891501763853692

List of values

[1, 12, 294, 8178, 240186, 7271832, 224484684, 7024333608, 221997758346, 7069839153252, 226514542354974, 7293106513777338, 235771657829954856, 7648097463209959872, 248816951694728297664, 8115177647328907792368, 265257523746851227499466, 8687091365891501763853692]

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

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