Should A120120 have base keyword?

Alonso Del Arte alonso.delarte at gmail.com
Tue Sep 12 20:38:49 CEST 2006


Shouldn't this sequence have the base keyword?

A120120  Number of n-digit prime quadruplets.

1, 3, 7, 26, 128, 733, 3869, 23620, 152141, 1028789, 7188960,
51672312, 381226246, 2873279651

In binary, for example, the sequence of number of n-digit prime
quadruplets would begin with offset 7 and go something like 1, 1, 0,
1, 2, 3, 1, 5, 7, 5, 15, 19, 8 (this is a quick and dirty estimate
assuming all members of any given prime quadruplet have the same
number of digits -- something that might be true in binary and decimal
but perhaps not other bases).

Alonso






More information about the SeqFan mailing list