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.

A108487 Sum binomial(2n-2k,2k)10^(n-k), k=0..floor(n/2).

Table of values

n a(n)
0 1
1 10
2 110
3 1600
4 25100
5 395000
6 6201000
7 97280000
8 1526010000
9 23938500000
10 375525100000
11 5890896000000
12 92411011000000
13 1449659710000000
14 22740940010000000
15 356739136000000000
16 5596198360100000000

List of values

[1, 10, 110, 1600, 25100, 395000, 6201000, 97280000, 1526010000, 23938500000, 375525100000, 5890896000000, 92411011000000, 1449659710000000, 22740940010000000, 356739136000000000, 5596198360100000000]

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

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