108429domain: NAppears in sequencesa(n) equals the square of the n-th partial sum added to twice the n-th partial sum of the squares, divided by a(n-1), for all n>=1, with a(0)=1, a(1)=1.at n=9A088131First element of first run of at least n consecutive numbers not representable as the sum of two base-10 palindromes.at n=8A263994