18928

Appears in sequences

• Expansion of tan(sinh(x).exp(x)).at n=7A009686
• Sorted k-factorial numbers (numbers of form k-1 excluded).at n=32A028687
• Sorted factorial and k-factorial numbers (numbers of form k-1 excluded).at n=38A028688
• Theta series of A2[hole]^4.at n=37A033690
• Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^14 in powers of x.at n=9A047639
• a(n) = 28*n^2.at n=26A064763
• Numbers in A070938 that set a new record for digital sums and ending digits.at n=17A070594
• Variance of time for a random walk starting at 0 to reach one of the boundaries at +n or -n for the first time.at n=13A072819
• a(n) is the smallest multiple of n such that a(n) mod 100 = n and S(n)=n where S(n) is the sum of the base-ten digits of n, or 0 if no such a(n) exists.at n=27A075154
• Inverse Moebius transform of the shifted tetrahedral numbers.at n=43A116963
• a(n) = Product_{k>=0} (1 + floor(n/2^k)).at n=25A132269
• a(n) = (n-1)^2*(n+1).at n=27A152618
• a(n) = 512*n - 16.at n=36A157447
• a(n) is the smallest multiple of n such that a(n) ends with n and S(a(n))=n where S(m) is the sum of the base ten digits of m, or 0 if no such a(n) exists.at n=27A187924
• Number of (n+2) X (2+2) 0..1 arrays with every 2 X 2 and 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.at n=16A253504
• Numbers n such that A003146(n) = floor(alpha^3*n)+1, where alpha = 1.839... is the positive real zero of x^3-x^2-x-1.at n=21A278353
• Number of n X 2 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=9A279460
• Triangle read by rows: T(n,k) (n >= 1, 1 <= k <= n) = number of normalized 2n-plets associated to trees with k edges.at n=33A294439
• a(n) = (2*n + 4)!*(n^2 + 11*n + 2)/(2*(n-1)!*(n+6)!).at n=5A294445
• Indices of Ulam prime triples, where u(k), u(k+1) and u(k+2) are all primes, and u(k) = A002858(k) are the Ulam numbers.at n=10A307330