A129897 a(n) is the integer that results from truncating both e and Pi to n digits, adding the results, and discarding the decimal point.

5, 58, 585, 5859, 58597, 585987, 5859873, 58598744, 585987447, 5859874481, 58598744819, 585987448203, 5859874482048, 58598744820487, 585987448204883, 5859874482048838, 58598744820488384, 585987448204883846, 5859874482048838473, 58598744820488384737

Offset

0,1

Links

Table of n, a(n) for n=0..19.

Formula

a(n) = floor(floor(Pi*10^n) + floor(exp(1)*10^n)), Pi=3.14159..., e=2.71828....

Example

From Jon E. Schoenfield, Feb 24 2021: (Start)
n=1: 2      + 3      = 5      --> a(1) = 5;
n=2: 2.7    + 3.1    = 5.8    --> a(2) = 58;
n=3: 2.71   + 3.14   = 5.85   --> a(3) = 585;
n=4: 2.718  + 3.141  = 5.859  --> a(4) = 5859;
n=5: 2.7182 + 3.1415 = 5.8597 --> a(5) = 58597; etc.
(End)

Mathematica

Module[{nn=20, pi, e}, pi=RealDigits[Pi, 10, nn][[1]]; e=RealDigits[E, 10, nn] [[1]]; Table[FromDigits[Take[pi, n]]+FromDigits[Take[e, n]], {n, nn}]] (* Harvey P. Dale, May 28 2016 *)

Crossrefs

Cf. A011543, A011545.

Sequence in context: A173202 A104099 A334698 * A256218 A151424 A097631

Adjacent sequences: A129894 A129895 A129896 * A129898 A129899 A129900

Keyword

nonn,base,less

Author

Kevin J Davis (kevin_j_davis(AT)btinternet.com), Jun 04 2007

Extensions

Corrected and extended by Harvey P. Dale, May 28 2016

Status

approved