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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.

A333209 a(n) is the denominator of Sum_{i >= 0} 1/(Lucas(i)*Lucas(i+2n)), with Lucas(i) as defined in A000032.

Table of values

n a(n)
1 2
2 36
3 7392
4 1688148
5 197412831
6 21085413226416
7 101768454084335346
8 60343478516053297339236
9 73240105330540144095414793632
10 1956470757376233684880813258936380492
11 32802418997525523144166495047229414174839
12 202042966989952174292936124782341088713724476716231

List of values

[2, 36, 7392, 1688148, 197412831, 21085413226416, 101768454084335346, 60343478516053297339236, 73240105330540144095414793632, 1956470757376233684880813258936380492, 32802418997525523144166495047229414174839, 202042966989952174292936124782341088713724476716231]

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

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