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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.

A334612 a(n) is the total number of down-steps after the final up-step in all 4_3-Dyck paths of length 5*n (n up-steps and 4*n down-steps).

Table of values

n a(n)
0 0
1 10
2 100
3 955
4 9296
5 92704
6 944636
7 9801929
8 103262436
9 1101802764
10 11883775540
11 129365990061
12 1419569592748
13 15686292728288
14 174399501150236
15 1949516926153045
16 21898270953801720
17 247045453792464294
18 2797968888077323968
19 31801559116255638374
20 362622937212800684560

List of values

[0, 10, 100, 955, 9296, 92704, 944636, 9801929, 103262436, 1101802764, 11883775540, 129365990061, 1419569592748, 15686292728288, 174399501150236, 1949516926153045, 21898270953801720, 247045453792464294, 2797968888077323968, 31801559116255638374, 362622937212800684560]

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

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