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A172260 a(n) = A172240(n) + A172240(n+1). 0

%I #12 Jun 22 2022 01:48:08

%S 10,20,30,36,48,60,68,78,84,96,114,128,138,144,152,162,172,186,198,

%T 204,212,222,240,258,268,276,288,300,308,320,336,354,372,384,390,396

%N a(n) = A172240(n) + A172240(n+1).

%C For a(n) > 10, a(n) is divisible by 6 except if A172240(n+1) - A172240(n) is equal to 6.

%Y Cf. A172240.

%K nonn,easy

%O 1,1

%A _Giovanni Teofilatto_, Nov 20 2010

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)