65971domain: NAppears in sequencesa(n) = n^4 + (9/2)*n^3 + n^2 - (9/2)*n + 1.at n=15A003878Sp = reversal of some square s where s = x^2 for x = 1,2,.. (ignoring leading zeros). Sp is in the sequence if it is semiprime.at n=43A242097Frobenius-Perron dimensions of simple integral fusion rings of rank 4.at n=3A369625