On Mon, Aug 17, 2009 at 11:41 PM, Kip Murray<[email protected]> wrote: > (iii0 ,: iii1) 10 > 1 4 7 10 13 16 19 22 25 28 <-- take 10 from first sequence > 0 4 20 54 112 200 324 490 704 972 <-- take 10 from second sequence
iii0 is obvious, since the difference between adjacent elements is always 3. iii1 is slightly harder, but 2&(-~/\)^:a:shows that it's also a polynomial. iii0=: 1 3&p. iii1=: 0 0 3 1&p. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
