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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.

A121013 Denominators of partial alternating sums of Catalan numbers scaled by powers of 1/(11^2) = 1/121.

Table of values

n a(n)
0 1
1 121
2 14641
3 1771561
4 214358881
5 25937424601
6 285311670611
7 34522712143931
8 4177248169415651
9 505447028499293771
10 672749994932560009201
11 81402749386839761113321
12 9849732675807611094711841

List of values

[1, 121, 14641, 1771561, 214358881, 25937424601, 285311670611, 34522712143931, 4177248169415651, 505447028499293771, 672749994932560009201, 81402749386839761113321, 9849732675807611094711841]

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

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