31068

Appears in sequences

• Number of permutations on n letters that have only cycles of length 3 or less.at n=9A057693
• Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,11.at n=11A064242
• Sigmabonacci numbers: a(n)=a(n-1)+Sigma(a(n-2)). Sigma(n)=Sum of divisors of n.at n=16A074371
• Sums of rows of A077529.at n=11A077531
• Number of (3+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=17A250758
• Theta series of the 12-dimensional lattice of hyper-roots D_3(SU(3)).at n=8A288488
• Triangle read by rows: T(n,k) is the number of permutations in S_n for which all cycles have length <= k.at n=38A330858
• Sum over all closed Deutsch paths of length n of products over all peaks p of x_p/y_p, where x_p and y_p are the coordinates of peak p.at n=11A333114