A197569 - OEIS

%I #11 Apr 10 2021 02:06:21

%S 3,9,13,21,21,48,54,108,148,172,207,239,320,376,457,469,485,497,561,

%T 569,569,577,607,639,657,681,705,717,723,765,810,840,840,856,864,872,

%U 900,907,925,925,928,928,1009,1012,1075,1156,1180,1180,1205,1212,1212

%N Partial sums of A197568 (product of n-th digit of Pi and n-th digit of the Golden Ratio).

%C The Golden Ratio = 1 + (sqrt(5)-1)/2.

%H Harvey P. Dale, <a href="/A197569/b197569.txt">Table of n, a(n) for n = 0..1000</a>

%t With[{nn=120},Accumulate[RealDigits[Pi,10,nn][[1]]  RealDigits[ GoldenRatio, 10,nn][[1]]]]

%Y Cf. A197568.

%K nonn,base

%O 0,1

%A _Harvey P. Dale_, Oct 16 2011