495495

Appears in sequences

• a(n) = 7*(n+1)*binomial(n+5,7).at n=8A027812
• a(n) = 99*(n+1)*binomial(n+5,12).at n=3A027817
• Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= n/3.at n=43A048002
• Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n-1)/3.at n=43A048015
• Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n-2)/3.at n=43A048026
• Numbers k such that (k + R(k)) / (k - R(k)) = +-11 where R(k) is the digit reversal of k (A004086).at n=14A062390
• a(n) = binomial(n+8,n)*binomial(n+11,8).at n=3A105944
• a(n) = binomial(n+4,4)*binomial(n+6,4).at n=8A107395
• a(n) = binomial(n+3,3)*binomial(n+6,6).at n=8A107418
• A symmetrical triangle of coefficients based on A001147: a(n)=(2*n-1)*a(n-1); t(n,m)=a(n)^2/((2*n - 1)*a(m)*a(n - m)).at n=30A143081
• A symmetrical triangle of coefficients based on A001147: a(n)=(2*n-1)*a(n-1); t(n,m)=a(n)^2/((2*n - 1)*a(m)*a(n - m)).at n=33A143081
• Numbers with exactly 5 distinct odd prime divisors {3,5,7,11,13}.at n=11A147578
• T(n,k) = denominator of 2*Pi*Sum_{j=0..n-k-1} ((-1)^j*n*(k + j + 2)*(n + k +j)!*(k + j)!^2)/((n - k - j - 1)!*(2*k + j + 1)!*j!*Gamma(k + j + 3/2)*Gamma(k + j + 5/2)), triangle read by rows (n >= 1, 0 <= k <= n - 1).at n=26A159983
• 6*n/5 = (n written backwards), n > 0.at n=8A193434
• Number of 0..n arrays x(0..7) of 8 elements without any interior element greater than both neighbors or less than both neighbors.at n=7A200876
• a(n) = n*(n+1)*(n+2)*(n+3)*(n^2+3*n+26)/720.at n=24A257200
• Number of sequences of 5 throws of an n-sided die (with faces numbered 1, 2, ..., n) in which the sum of the throws first reaches or exceeds n on the 5th throw.at n=24A264750
• Number of permutations p of [n] such that the sequence of ascents and descents of p is encoded by the 0's and 1's, respectively, in the binary expansion of n (read from right to left and using leading 0's if necessary).at n=30A335308
• Number of intersections formed within a triangle by placing n points "in general position" on each of the three sides and connecting each point to each of the points on the other two sides using straight lines.at n=22A365929
• Numbers k such that R(k)/k is of the form (m + 1)/m, where R(k) is the digital reversal of k.at n=20A376259