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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.

A334610 a(n) is the total number of down-steps after the final up-step in all 4_1-Dyck paths of length 5*n (n up-steps and 4*n down-steps).

Table of values

n a(n)
0 0
1 7
2 58
3 505
4 4650
5 44677
6 443238
7 4507461
8 46744100
9 492492330
10 5257084420
11 56734340091
12 618001356458
13 6785943435960
14 75033214770640
15 834733624099485
16 9336542892778440
17 104932793226255165
18 1184421713336050590
19 13421053387405062290
20 152613573227667516580

List of values

[0, 7, 58, 505, 4650, 44677, 443238, 4507461, 46744100, 492492330, 5257084420, 56734340091, 618001356458, 6785943435960, 75033214770640, 834733624099485, 9336542892778440, 104932793226255165, 1184421713336050590, 13421053387405062290, 152613573227667516580]

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

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