133848

Appears in sequences

• Numbers k such that Sum_{d|k} tau(d)/d is an integer, where tau(x) = A000005(x).at n=8A068978
• Structured great rhombicubeoctahedral numbers.at n=21A100146
• Triangle read by rows, T(n,k) = sum(j=0..k-1, S(n+1,j+1)*S(n,k-j)) where S denotes the Stirling cycle numbers A132393, T(0,0)=1, n>=0, 0<=k<=2n.at n=43A254881
• a(n) = (exp(k)*Gamma(1+n, k) - exp(-k)*Gamma(1+n, -k))/k! for k = 3.at n=8A296661
• Successive numbers arising from the Moessner construction of the sequence A010790 (n!*(n+1)!) on pages 64, 65 of Conway-Guy's "Book of Numbers".at n=31A346595