28461

Appears in sequences

• (1, 4, 7, 10, 13, ...) convolved with (1, 0, 4, 7, 10, 13, ...); given A016777 = (1, 4, 7, 10, 13, ...).at n=27A179905
• Sums of the diagonals of the matrix formed by listing the h-Stohr sequences in increasing order.at n=22A193911
• p-INVERT of (1,0,1,0,0,0,0,...), where p(S) = 1 - S^3 - S^6.at n=24A291739
• Numbers k such that k and k+1 have the same denominator of the harmonic means of their divisors.at n=11A348415
• Numbers k such that k and k+1 have the same denominator of the harmonic means of their unitary divisors.at n=8A348657