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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.

A300390 The number of paths of length 7*n from the origin to the line y = 3*x/4 with unit east and north steps that stay below the line or touch it.

Table of values

n a(n)
0 1
1 5
2 227
3 15090
4 1182187
5 101527596
6 9247179818
7 877362665128
8 85783306955099
9 8582893111512001
10 874542924575207352
11 90437361732467946334
12 9467275300762187682554
13 1001309098267187214993056
14 106836493655355495755649544
15 11485688815900189437990930096
16 1242964338344397490958154292155

List of values

[1, 5, 227, 15090, 1182187, 101527596, 9247179818, 877362665128, 85783306955099, 8582893111512001, 874542924575207352, 90437361732467946334, 9467275300762187682554, 1001309098267187214993056, 106836493655355495755649544, 11485688815900189437990930096, 1242964338344397490958154292155]

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

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