Plot pairs of sequences in the OEIS

Plot pairs of sequences in the OEIS

URL: https://oeis.org/plot2.html

Thanks to Deborah F. Swayne

Sequence 1	Sequence 2
untransformedabsolute valuelog base 10	untransformedabsolute valuelog base 10
	Shift
Note: When taking logarithms, sequence values will be adjusted as needed.
Contents of Plot Plot Seq2(n+shift) vs Seq1(n) Plot Seq2(n+shift) vs n and Seq1(n) vs n Plot Seq1(n)/Seq2(n+shift) vs n Note: When plotting the ratio of two sequences, the ratio will be transformed using the choice for Seq1(n).	Appearance of Plot Draw points Draw line segments

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Sample pairs of sequences to plot:

• Pairwise plots
  • A117154 vs A119560 (mathematically obscure but visually interesting - see the link in the latter sequence for more)
  • A119560 vs A40
  • A4055 vs A40 (Suggested by David Wilson)
  • Shifted: A108618(n) vs. A108618(n+1), untransformed and without line segments, produces a spiral. (Suggested by Creighton Dement.)
• Both sequences against n
  • A002330 and A002331, A002365 and A002366, A076340 and A076341, with line segments. (Suggested by Franklin Adams-Watters.)
  • A007305 and A007306 (Suggested by David Wilson)
• Ratios
  • Bernoulli numbers: log(|A27641/A27642|), log(|A367/A2445|), A50925/A50932
  • Convergents to sqrt(2): A1333/A129
  • 1/n!: A12/A142
  • 1/n: A12/A27

The R code used to generate sequence plots is File:Qgraph.R.txt. The R code used to plot pairs of sequences is File:Plot2.R.txt.