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a(n) = floor((Pi^4/90)^n).
0

%I #6 Aug 29 2021 14:38:18

%S 1,1,1,1,1,1,1,1,2,2,2,2,2,3,3,3,3,4,4,4,5,5,6,6,7,7,8,9,9,10,11,12,

%T 13,14,15,17,18,20,21,23,25,27,30,32,35,38,41,44,48,52,56,61,66,71,77,

%U 83,90,98,106,115,124,134,146,158,171,185,200,216,234,254,275,297,322,348

%N a(n) = floor((Pi^4/90)^n).

%t Table[Floor[(Pi^4/90)^n], {n, 1, 100}]

%Y Cf. A125892.

%K nonn

%O 1,9

%A _Artur Jasinski_, Dec 13 2006