120960
domain: N
Appears in sequences
- a(n) = n! / 3.at n=6A002301
- Triangle of coefficients in expansion of D^n (tan x) in powers of tan x.at n=27A008293
- Denominators of Taylor series for 1/(sin x + tan x).at n=3A009724
- a(n) = n!*(n+6)! / 6!.at n=4A010795
- cosh(arcsin(x)*sin(x))=1+12/4!*x^4+3920/8!*x^8+120960/10!*x^10...at n=5A012337
- sec(arcsin(x)*sin(x))=1+12/4!*x^4+10640/8!*x^8+120960/10!*x^10...at n=5A012338
- -arctan(log(x+1)-arctanh(x))=1/2!*x^2+6/4!*x^4+90/6!*x^6+2520/8!*x^8...at n=5A013297
- Triangle of numbers arising from analysis of Levine's sequence A011784.at n=48A014621
- 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 (3,k)-perfect numbers.at n=31A019292
- Numbers k such that sigma(k) >= 4*k.at n=18A023198
- Maximum of different products of partitions of n into distinct parts.at n=41A034893
- Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*6^j.at n=31A038212
- Triangle whose (i,j)-th entry is binomial(i,j)*6^(i-j)*2^j.at n=32A038256
- A triangle related to A000045 (Fibonacci numbers).at n=49A039948
- Denominator of probability that 2 elements of S_n chosen at random (with replacement) generate S_n.at n=8A040174
- Triangle read by rows: T(n,k) = n!*k.at n=30A051683
- Number of pairs of sequences of cardinality at least 3.at n=8A052521
- a(n) = 3*n!.at n=8A052560
- E.g.f. 1/((1-x)(1-x^3)).at n=8A052569
- Expansion of E.g.f. x*(1-x)/(1-x-x^3).at n=8A052605