[seqfan] OEIS analogue of Erdos number

Jonathan Post jvospost3 at gmail.com
Sun Feb 22 02:19:57 CET 2009

Suppose we say that njas is the center of the universe, as Erdos is
for Erdos number.

That is, njas has a njas number of 0.

Anyone who co-authored an OEIS sequence with him has njas number = 1.

By induction, everyone who co-authored a sequence with a person X
whose njas number is njas(X) has an njas number no more than njas(X) +

Those who never coauthored an OEIS seq with njas have an njas number
of infinity.

What do we know about the graph that this defines?

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