# [seqfan] Re: Duplicate questions

Paul D Hanna pauldhanna at juno.com
Sat Feb 12 00:46:34 CET 2011

```Sequences A184481 and A001956 are different, not apparent until you look at their complements, where the formulas are explicitly given:

A184480(n)=floor((-1+sqrt(13))*n/2)
A001955(n)=floor(n*(1 + 1/sqrt(11)))

The first difference is at n=43.

---------- Original Message ----------
From: Richard Mathar <mathar at strw.leidenuniv.nl>
To: seqfan at seqfan.eu
Subject: [seqfan] Duplicate questions
Date: Sat, 12 Feb 2011 00:23:00 +0100

Which of these sequence pairs can be shown to differ at some point (in case
of which one would like to have this mentioned explicitly in at least one of
the two database entries), and which of these are the same?

http://oeis.org/?q=id:A184481|id:A001956
4,8,12,17,21,25,30,34,38,43,47,51,55,60,64,68,73,77,81,86,90,94,98,103,107,111,116,120,124,129,133,137,141,146,150,154,159,163,167,172,176,180,185,189,193,197,202,206,210,215,219,223,228,232,236,240,245,249,253,258,262,266,271,275,279,283,288,292,296,301,305,309,314,318,322,327,331,335,339,344,348,352,357,361,365,370,374,378,382,387,391,395,400,404,408,413,417,421,425,430,434,438,443,447,451,456,460,464,469,473,477,481,486,490,494,499,
4,8,12,17,21,25,30,34,38,43,47,51,55,60,64,68,73,77,81,86,90,94,98,103,107,111,116,120,124,129,133,137,141,146,150,154,159,163,167,172,176,180,185,189,

[...]

```