185776

Appears in sequences

• Triangle, read by rows, equal to the matrix square of A113370. Also given by the product: P^2 = Q*(R^-2)*Q^3, using triangular matrices P=A113370, Q=A113381 and R=A113389.at n=21A113374
• Column 0 of triangle A113374, also equals column 0 of A113381.at n=6A113375
• Triangle Q, read by rows, such that Q^3 transforms column k of Q^2 into column k+1 of Q^2, so that column k of Q^2 equals column 0 of Q^(3*k+2), where Q^3 denotes the matrix cube of Q.at n=21A113381
• Triangle, read by rows, given by the product Q^-2*P^3 using triangular matrices P=A113370, Q=A113381.at n=29A114155
• Numbers k such that sigma(k) = 2*sigma(k+1).at n=32A163193
• Zero together with the partial sums of A056640.at n=32A274772
• Numbers k such that k and k+1 have the same denominator of the harmonic means of their divisors.at n=20A348415