CREATE TABLE table_71605 ("Date" TEXT, "Round" TEXT, "Opponents" TEXT, "H / A" TEXT, "Result F\\u2013A" TEXT, "Attendance" FLOAT)

What is the sum of attendance for H/A values of 'n'?
SELECT SUM("Attendance") FROM table_71605 WHERE "H / A" = 'n'
SELECT SUM("Attendance") FROM "table_71605" WHERE "H / A" = 'n'