[seqfan] Length of binary representation of n^3

JEREMY GARDINER jeremy.gardiner at btinternet.com
Tue Oct 27 17:54:08 CET 2020

With regard to these sequences:

A070939 Length of binary representation of n.
A004221 10*log_10 (n) rounded up.

Calculating A070939(n^3) I noticed some similarity to the terms of 

For the values of n where A070939(n^3) differs from A004221(n) I find:


I'm happy to submit this sequence if anyone thinks it is interesting 


Jeremy Gardiner

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