40328

Appears in sequences

• a(n) = n! + n.at n=8A005095
• Numbers k such that k*(prime(k) - 1) is a square.at n=5A073630
• Row sums of the triangle A105160.at n=18A105157
• Powerful(1) numbers (A001694) that are sums of distinct factorials.at n=14A115645
• Square root of pi(A064523(n)).at n=18A115835
• Triangle T(n,k) = binomial(n, k)*(k! + (n-k)!), read by rows.at n=37A155162
• Triangle T(n,k) = binomial(n, k)*(k! + (n-k)!), read by rows.at n=43A155162
• Generalized factorions: numbers which are equal to the sum of the factorials of some or all of their digits in base 10.at n=7A163752
• Triangle read by rows: T(n,0) = T(n,n) = 1 for n >= 0, T(n,k) = ((n - 1)! + 1)*binomial(n, k) for 1 <= k <= n - 1, n >= 2.at n=37A168621
• Triangle read by rows: T(n,0) = T(n,n) = 1 for n >= 0, T(n,k) = ((n - 1)! + 1)*binomial(n, k) for 1 <= k <= n - 1, n >= 2.at n=43A168621
• Numbers k such that sigma(k) + tau(k) + phi(k) is a prime, where sigma(k) = A000203(k), tau(k) = A000005(k) and phi(k) = A000010(k).at n=15A229265
• Sum of n and the sum of the factorials of its digits.at n=7A241404
• E.g.f.: Sum_{n>=1} x^(n^2) * exp(n*x^n) / n!.at n=7A266211
• Sum of all squarefree semiprimes with greater prime factor prime(n).at n=19A339194
• Sum of numerator and denominator in the convergents of the approximation of log(2)/log(3) by a continued fraction.at n=9A355512
• Sum of numerator and denominator in a rational approximation j/k of q = log(2)/log(3), such that abs(j/k - q) is a new minimum.at n=26A355513
• Sum of numerator and denominator in a rational approximation j/k of q = log(2)/log(3), such that q - j/k is a new minimum, i.e., q is approximated from below.at n=34A355514
• Powerful numbers k such that both k-1 and k+1 are in A126706.at n=25A378629
• Achilles numbers that are deficient.at n=45A379164
• G.f. A(x) satisfies: A( A(x)^4 - A(x)^5 ) = x*A(x)^3.at n=11A380058