A099538 Sum of the first n digits of sqrt(2), including the initial "1".

1, 5, 6, 10, 12, 13, 16, 21, 27, 29, 32, 39, 42, 42, 51, 56, 56, 60, 68, 76, 76, 77, 83, 91, 99, 106, 108, 112, 114, 114, 123, 129, 138, 146, 146, 153, 161, 166, 172, 181, 187, 194, 195, 203, 210, 215, 218, 225, 231, 240, 244, 252, 252, 259, 262, 263, 270, 276, 282

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

sqrt(2)=1.41421356237... so the sums are 1, 1+4, 1+4+1, 1+4+1+4, 1+4+1+4+2,...
which gives 1, 5, 6, 10, 12,...

Mathematica

Accumulate[RealDigits[Sqrt[2], 10, 60][[1]]] (* Harvey P. Dale, May 30 2012 *)

Crossrefs

Cf. A002193 for digits of sqrt(2). Other sequences like this one for other constants: A099534-A099537, A039918, A046974, A046975.

Sequence in context: A046838 A326418 A037359 * A093614 A353280 A093509

Adjacent sequences: A099535 A099536 A099537 * A099539 A099540 A099541

Keyword

base,easy,nonn

Author

Mark Hudson (mrmarkhudson(AT)hotmail.com), Oct 22 2004

Status

approved