[seqfan] Re: Digit Spiral (end)
Eric.Angelini at kntv.be
Thu Feb 26 20:44:05 CET 2009
Hello Seq Fans,
Jean-Marc Falcoz has computed the correct sequence
(and a second interesting one) here :
Thanks to Paolo Lava I could explain what I intended
to Jean-Marc !
What about :
1) sowing the same way square numbers instead of nonnegative
integers? ("squares in squares")
2) prime numbers?
a) could we spiral around a pentagon, an hexagon, etc. (instead
of a square)?
b) what about sowing triangular numbers around a triangle?
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