246400

Appears in sequences

• Expansion of e.g.f. exp(sin(x)-sinh(x)).at n=12A013369
• cos(sin(x)-sinh(x))=1-40/6!*x^6-480/10!*x^10+246400/12!*x^12...at n=6A013373
• Expansion of e.g.f.: exp(arcsin(x)-arcsinh(x))=1+2/3!*x^3+40/6!*x^6+450/7!*x^7+2240/9!*x^9...at n=12A013416
• E.g.f.: cos(arcsin(x)-arcsinh(x))=1-40/6!*x^6-108000/10!*x^10+246400/12!*x^12...at n=6A013419
• Triangle read by rows, the Bell transform of n!*binomial(2,n) (without column 0).at n=58A049404
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=3.at n=21A050211
• (-1)sigma sociable number of order 2: (-1)sigma((-1)sigma(x))=x, but (-1)sigma(x)<>x, where if x=Product p(i)^r(i) then (-1)sigma(x)=Product (-1+Sum p(i)^s(i), s(i)=1 to r(i)); (-1)sigma(1)=1.at n=6A051152
• Number of permutations sigma of [3n] without fixed points such that sigma^3 = Id.at n=4A052502
• Duplicate of A052502.at n=4A060079
• Generalized Stirling2 array (-1,2)S2. Irregular triangle a(n, m) for n >= 1 and 2 <= m <= 2*n.at n=16A091752
• Row 3 of array in A288580.at n=11A092397
• a(n) = product of first n integers not divisible by 3.at n=7A111394
• Triangle, read by rows, where T(n,k) = n!/(k!*(n-3*k)!*3^k) for n>=3*k>=0.at n=34A118931
• Triangle read by rows: T(n,k) is the number of set partitions of the set {1,2,...,n} (or of any n-set) containing k blocks of size 3 (0<=k<=floor(n/3)).at n=33A124503
• Numbers k not divisible by 6 such that sigma(k) > 3*k.at n=18A126104
• Denominator of Laguerre(n, 3).at n=11A160626
• Number T(n,k) of permutations on n elements with exactly k 3-cycles; triangle read by rows.at n=29A186526
• Number T(n,k) of permutations on n elements with exactly k 3-cycles; triangle read by rows.at n=34A186526
• Number of (n+2) X 4 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=17A202196
• The Gauss factorial n_3!.at n=11A232980