[seqfan] A128471

vincenzo.librandi at tin.it vincenzo.librandi at tin.it
Sat Sep 4 20:17:34 CEST 2010


 Dear seqfqns
formula of A128471:
a(n)=2*a(n-1)-a(n-2), with (a(1)=7 a(2)=37)
Ex: a(3)=2*37-7=67; a(4)=2*67-37=97; a(5)=2*97-67=127.
Regards, Vincenzo  


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