1411788

Appears in sequences

• Triangle of coefficients in expansion of (2 + 7*x)^n.at n=33A013623
• Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*2^j.at n=30A038268
• Numbers n such that the squarefree kernel of n is equal to the number of divisors of n.at n=35A070226
• Triangle, read by rows, of coefficients of the hyperbinomial transform.at n=48A088956
• Numbers of the form (7^i)*(12^j), with i, j >= 0.at n=27A108238
• a(n) = 7*a(n-1) -14*a(n-2) +7*a(n-3), with a(0)=1, a(1)=2, a(2)=7.at n=11A215143
• Triangle read by rows: T(n,k) = number of parking functions a of length n such that a(1) = k and if we replace a(1) = k with k+1 we don't get a parking function.at n=38A298594
• Triangle read by rows: T(n,k) = number of parking functions a of length n such that a(1) = k and if we replace a(1) = k with k+1 we don't get a parking function.at n=42A298594
• Base-7 complementary numbers: n equals the product of the 7 complement (7-d) of its base-7 digits d.at n=11A298977
• Generated by Marf-Low rule 173.at n=44A328086
• Number of indecomposable closed walks of length 2n along the edges of a cube based at a vertex.at n=8A328778