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Partial sums of digits of decimal expansion of Khinchin's constant (sequence A002210).
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%I #9 Jul 12 2024 23:13:41

%S 2,8,16,21,25,30,32,32,32,33,33,39,44,47,47,53,57,61,66,69,69,78,85,

%T 86,90,98,101,106,110,118,119,126,135,140,146,155,158,166,168,168,171,

%U 179,181,183,192,195,204,213,217,221,227,229,238,243,246,246,251,252,253

%N Partial sums of digits of decimal expansion of Khinchin's constant (sequence A002210).

%e Khinchin's constant 2.6854520010 ... so the sums are 2, 2+6, 2+6+8, 2+6+8+5, 2+6+8+5+4..., leading to the terms 2, 8, 16, 21, 25,...

%t L= Rest@FoldList[ Plus, 0, First@ RealDigits[Khinchin, 10, 100]]

%t Accumulate[RealDigits[Khinchin,10,60][[1]]] (* _Harvey P. Dale_, Mar 24 2011 *)

%Y Cf. A002210 for digits of Khintchine's constant

%K nonn,base

%O 1,1

%A _Michel Lagneau_, Sep 11 2010