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.

A125280 Row sums of triangle A125280, which is the convolution triangle of A030266.

Table of values

n a(n)
0 1
1 2
2 5
3 15
4 53
5 217
6 1011
7 5260
8 30041
9 185677
10 1228209
11 8620874
12 63792445
13 495163451
14 4015888557
15 33923543492
16 297706713081
17 2708377382444
18 25495655264883
19 247952347547483
20 2487743315817023
21 25717746952124842

List of values

[1, 2, 5, 15, 53, 217, 1011, 5260, 30041, 185677, 1228209, 8620874, 63792445, 495163451, 4015888557, 33923543492, 297706713081, 2708377382444, 25495655264883, 247952347547483, 2487743315817023, 25717746952124842]

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

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