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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.

A203858 a(n) = (1/n) * Sum_{d|n} moebius(n/d) * Lucas(d)^7, where Lucas(n) = A000204(n).

Table of values

n a(n)
1 1
2 1093
3 5461
4 205339
5 3897434
6 102033577
7 2464268044
8 63327787115
9 1627243839488
10 42592757748839
11 1123514934469218
12 29909548355299575
13 801531714260597080
14 21610508530971123358
15 585611144766061271010
16 15940294818101008311105
17 435592135387553867410170

List of values

[1, 1093, 5461, 205339, 3897434, 102033577, 2464268044, 63327787115, 1627243839488, 42592757748839, 1123514934469218, 29909548355299575, 801531714260597080, 21610508530971123358, 585611144766061271010, 15940294818101008311105, 435592135387553867410170]

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

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