187272

Appears in sequences

• Non-perfect powers k for which q = A051903(k)/A051904(k) is an integer, A051904(k) > 1.at n=24A093770
• a(n) = index of first appearance of n in A096859.at n=27A097007
• Transform of n^3 by the Riordan array (1/(1-x^2), x).at n=34A105636
• Numbers with prime factorization p^2*q^3*r^4 where p, q, and r are distinct primes.at n=19A190115
• a(n) = Pell(n)*A109041(n) for n>=1, with a(0)=1, where A109041 lists the coefficients in eta(q)^9/eta(q^3)^3.at n=8A209453
• a(n) = n^4/8 if n is even, a(n) = (n^2-1)^2/8 if n is odd.at n=35A212892
• Number T(n,k) of isoscent sequences of length n with exactly k ascents; triangle T(n,k), n>=0, 0<=k<=n+3-ceiling(2*sqrt(n+2)), read by rows.at n=48A242351
• Number of isoscent sequences of length n with exactly two ascents.at n=8A243228
• Sum of cubes of the first n even numbers (A016743).at n=17A254371
• Numbers n such that 7*8^n + 1 is prime.at n=10A269544