87763domain: NAppears in sequences[ 3rd elementary symmetric function of {sqrt(k+1)} ], k = 1,2,...,n.at n=21A025220Palindromic numbers in bases 3 and 6 written in base 10.at n=14A259375Sequence shifts left ten places under Weigh transform with a(n) = signum(n) for n<10.at n=54A316082