[seqfan] Digitsum of a(n) is visible in a(n+1)
Eric.Angelini at kntv.be
Mon Feb 22 15:37:47 CET 2010
here is another re-ordering of the Naturals:
The digitsum of a(n) is visible in the smallest
a(n+1) not yet present in S:
... this is computed by hand -- and fun to do!
The 'equivalent' seq. is much harder to write:
"Digitsum of a(n) is visible in a(n-1)", or (bet-
ter), "a(n) shows the digitsum of the smallest
a(n+1) not yet present in T":
More headaches than fun with this one!
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