61440
domain: N
Appears in sequences
- a(n) = (n+2)*2^(n-1).at n=13A001792
- Smallest number with 2n divisors.at n=25A003680
- Theta series of packing P_{10c}.at n=8A004021
- Theta series of 16-dimensional Barnes-Wall lattice.at n=3A008409
- Theta series of (probably nonexistent) exceptionally good 16-dimensional sphere packing.at n=6A008774
- Floor-factorial numbers: a(n) = Product_{k=1..n} floor(n/k).at n=16A010786
- Triangle of coefficients in expansion of (1+8x)^n.at n=25A013615
- Numbers j such that sigma(sigma(j)) = k*j for some k.at n=34A019278
- Let sigma_m (n) be result of applying sum-of-divisors function m times to n; call n (m,k)-perfect if sigma_m (n) = k*n; sequence gives the (2,8)-perfect numbers.at n=6A019285
- a(n) = 2^n - n^3.at n=16A024013
- a(n) = 4^n - n^4.at n=8A024040
- Number of rooted graphs on n labeled nodes where the root has degree 2.at n=3A038094
- Number of rooted graphs on n labeled nodes where the root has degree 3.at n=2A038096
- Triangle read by rows: (i,j)-th entry is binomial(i,j)*3^(i-j)*8^j.at n=19A038226
- Triangle whose (n, k)-th entry is binomial(n, k)*4^(n - k)*4^k.at n=23A038234
- Triangle whose (n, k)-th entry is binomial(n, k)*4^(n - k)*4^k.at n=25A038234
- Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*10^j.at n=22A038240
- Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*1^j.at n=23A038279
- Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*3^j.at n=16A038281
- Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*4^j.at n=26A038306