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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.

A121008 Numerators of partial alternating sums of Catalan numbers scaled by powers of 1/(5*3^2) = 1/45.

Table of values

n a(n)
0 1
1 44
2 1982
3 17837
4 4013339
5 60200071
6 2709003239
7 121905145612
8 658287786362
9 740573759652388
10 33325819184374256
11 1499661863296782734
12 67484783848355431042
13 607363054635198730798
14 3036815273175993713422

List of values

[1, 44, 1982, 17837, 4013339, 60200071, 2709003239, 121905145612, 658287786362, 740573759652388, 33325819184374256, 1499661863296782734, 67484783848355431042, 607363054635198730798, 3036815273175993713422]

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

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