343680

Appears in sequences

• a(n) = (1/2) * A027052(n, 2n-1).at n=14A027057
• Theta series of 8-d 5-modular lattice Q_8(1) with det 625 and minimal norm 4.at n=33A028976
• Number of permutations of floor(i*7/4), i=0..n-1, with all sums of 7 adjacent terms unique.at n=8A152637
• Number of permutations of floor(i*8/5), i=0..n-1, with all sums of 7 adjacent terms unique.at n=8A152641
• Number of permutations of floor(i*9/4), i=0..n-1, with all sums of 7 adjacent terms unique.at n=8A152644