71877domain: NAppears in sequencesSum_{0<j<k<=n} s(k)-s(j), where s(j)=A002620(j) is the j-th quarter-square.at n=34A206806Antidiagonal sums of the convolution array A213841.at n=17A213843Numbers k such that 309*2^k+1 is prime.at n=40A323144Index of first occurrence of -n in A000319, or -1 if -n never appears there.at n=46A381231