67284

Appears in sequences

• Unsigned Stirling numbers of first kind s(n,4).at n=5A000454
• Stirling numbers of first kind, s(n+5, n).at n=3A053567
• Triangle T(n,k) read by rows giving number of fixed 4 X k polyominoes with n cells (n >= 4, 1<=k<=n-3).at n=52A059680
• Numbers n such that n - reverse(n) = phi(n).at n=7A072393
• Sixth column of triangle A075181 divided by 4!.at n=3A075186
• Triangle read by rows: T(n,k) = |s(n,n+1-k)|, where s(n,k) are the signed Stirling numbers of the first kind A008276 (1 <= k <= n; in other words, the unsigned Stirling numbers of the first kind in reverse order).at n=41A094638
• Alfred Moessner's factorial triangle.at n=31A125714
• Triangle T(n,k), 0 <= k <= n, read by rows, giving coefficients of the polynomial (x+1)(x+2)...(x+n), expanded in increasing powers of x. T(n,k) is also the unsigned Stirling number |s(n+1, k+1)|, denoting the number of permutations on n+1 elements that contain exactly k+1 cycles.at n=39A130534
• Triangle of unsigned Stirling numbers of the first kind (see A048994), read by rows, T(n,k) for 0 <= k <= n.at n=49A132393
• E.g.f.: -1/(1+LambertW(-x)^2).at n=7A277490
• T(n, k) = [x^k] Pochhammer(x, n-k) for n >= 0, 0 <= k <= floor(n/2). Irregular triangle read by rows.at n=53A331327
• a(n) = |Stirling1(2*n + 1, n)|.at n=4A367777
• Triangle read by rows: the exponential almost-Riordan array ( 1/(1-x) | 1/(1-x), log(1/(1-x)) ).at n=49A372973