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Number of positive integers <= 2^n of form 3 x^2 + 10 y^2.
0

%I #11 Jan 24 2022 03:56:24

%S 0,0,1,1,4,6,12,23,42,76,143,262,496,938,1783,3397,6515,12523,24152,

%T 46711,90543,175867,342161,666712,1300805,2541033,4969255,9727606,

%U 19059560,37374839,73347038,144042897,283064780,556601613,1095087697

%N Number of positive integers <= 2^n of form 3 x^2 + 10 y^2.

%H <a href="/index/Qua#quadpop">Index entries for sequences related to populations of quadratic forms</a>

%Y Cf. A020681.

%K nonn

%O 0,5

%A _David W. Wilson_