B What function satisfies this table?

[Frabjous]

One would expect this sequence to converge to ... 30, 30, 30, 30, ... with a few 20, 10 and 10, 20 subsequences scattered therein.

Er... actually it will converge to ... 10, 10, 10, ... with a few 20's and 30's scattered in (we are looking at intervals between composites which become increasingly dense).

Doesn’t throwing in a few other numbers mean that the sequence does not converge?

 

[Mark44]

Your table is linear.

Strictly speaking, the data suggest a piecewise linear graph, which is somewhat different.

Of course, but the data does not support a pure straight line.

Right.