A118358-9: Next term 71820 with 21 steps

[zak seidov]

Neil, seqfans,
 
the next term in A118358 is 21
and the corresponding 
next term in A118359 is 71820.

For n<800,000 
there are 136 numbers with 21
steps, the largest one being 794640.

I'm continuing for n>800,000.
Zak



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