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.

A026001 a(n) = T(3n,n), where T = Delannoy triangle (A008288).

Table of values

n a(n)
0 1
1 7
2 85
3 1159
4 16641
5 246047
6 3707509
7 56610575
8 872893441
9 13560999991
10 211939849045
11 3328419072535
12 52481589415425
13 830317511708367
14 13174519143904245
15 209559710593266719
16 3340604559333629953
17 53354776911196959335
18 853607938952248383829
19 13677336690921351929767

List of values

[1, 7, 85, 1159, 16641, 246047, 3707509, 56610575, 872893441, 13560999991, 211939849045, 3328419072535, 52481589415425, 830317511708367, 13174519143904245, 209559710593266719, 3340604559333629953, 53354776911196959335, 853607938952248383829, 13677336690921351929767]

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

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