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%I #11 Sep 28 2018 02:55:07
%S 4,5,9,11,12,15,20,26,28,31,38,41,41,50,55,55,59,67,75,75,76,82,90,98,
%T 105,107,111,113,113,122,128,137,145,145,152,160,165,171,180,186,193,
%U 194,202,209,214,217,224,230,239,243,251,251,258,261,262,269,275,281
%N Sum of the first n decimal places of sqrt(2).
%C Cf. A099538 for a version of this sequence resulting from including all digits of sqrt(2) and not just the digits after the decimal point.
%H G. C. Greubel, <a href="/A099539/b099539.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) = A099538(n+1) - 1.
%e Decimal places of sqrt(2) are 41421356237... so sums are 4, 4+1, 4+1+4, 4+1+4+2,... which gives 4, 5, 9, 11, ...
%t Accumulate[Rest[RealDigits[N[Sqrt[2],70]][[1]]]] (* _Harvey P. Dale_, Dec 12 2010 *)
%Y Cf. A099538 and A099534, A099535, A099536, A099537, A039918, A046974, A046975 for analogous sequences based on other constants.
%K base,easy,nonn
%O 1,1
%A Mark Hudson (mrmarkhudson(AT)hotmail.com), Oct 22 2004
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