69498

Appears in sequences

• Expansion of 1/((1+x)(1-x)^8).at n=14A001779
• Highest degree of an irreducible representation of symmetric group S_n of degree n.at n=13A003040
• Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 1 skipped prime.at n=30A050768
• Highest degree of an irreducible representation of the alternating group A_n of degree n.at n=13A060955
• a(n) = (1 - 2*cos(Pi/9))^n + (1 + 2*cos(Pi*2/9))^n + (1 + 2*cos(Pi*4/9))^n.at n=11A062882
• Triangle read by rows, T(n,k) for 0<=k<=n, generalizes the colored Motzkin paths of A107264.at n=49A201638
• List of integers m>0 with m-1 and m+1 both prime, and m-2, m, m+2 all practical.at n=18A209236
• Number of n X n 0..1 arrays with rows unimodal and columns nondecreasing.at n=7A225006
• Number of n X 7 0..1 arrays with rows unimodal and columns nondecreasing.at n=6A225009
• Number of 7Xn 0..1 arrays with rows unimodal and columns nondecreasing.at n=6A225014
• Expansion of Product_{k>=1} 1/(1 - x^k)^(k*(k+1)^2/2).at n=9A302447
• Triangle read by rows, T(n, k) = [x^k] -hypergeom([-1/2, -n, -n], [1, 1], 4*x).at n=53A367024
• Numbers k such that the sums of digits of k and 1/k in factorial base (A007623) are equal.at n=33A373084