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a(n)= n * reversal(n-1)
0

%I #2 Mar 31 2012 14:00:41

%S 0,2,6,12,20,30,42,56,72,90,11,132,273,434,615,816,1037,1278,1539,

%T 1820,42,264,506,768,1050,1352,1674,2016,2378,2760,93,416,759,1122,

%U 1505,1908,2331,2774,3237,3720,164,588,1032,1496,1980,2484,3008,3552,4116,4700

%N a(n)= n * reversal(n-1)

%C a(8)=8xR(7)=8x7=56; a(15)=15xR(14)=15x41=615; a(26)=26xR(25)=26x52=1352

%K nonn,base

%O 1,2

%A _Claudio Meller_, May 30 2009