This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A331137 #10 Jan 11 2020 15:30:04
%S A331137 0,1,2,2,3,3,3,3,3,3,4,4,4,4,4,4,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
%T A331137 6,6,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,10,10,10,10,10,10,10,
%U A331137 10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12
%N A331137 a(n) = Sum_{primes p <= n} b(p-1), where b = A108548.
%H A331137 Yoichi Motohashi, <a href="http://matwbn.icm.edu.pl/ksiazki/aa/aa16/aa1633.pdf">On the distribution of prime numbers which are of the form x^2+y^2+1</a>, Acta Arith. 16 (1969/70), 351-363. MR0288086 (44 #5284).
%Y A331137 Cf. A108548.
%K A331137 nonn
%O A331137 1,3
%A A331137 _N. J. A. Sloane_, Jan 11 2020