74340

Appears in sequences

• A transform of floor((n+2)/2) with Hankel transform floor((n+2)/2)*(cos(Pi*n/2) + sin(Pi*n/2)).at n=15A134389
• Indices of rows of triangle A262432 where the maximum term of the row is a new record.at n=39A262464
• Number of terms in polynomial sequence s(n) = x*y*z*(s(n-1)*s(n-3) + s(n-2)^2)/s(n-4), with s(1) = x, s(2) = s(3) = 1, s(4) = y.at n=30A338218
• a(n) = Sum_{k=1..n} k^Omega(k).at n=18A347616
• a(0) = 0; for n >= 1, a(n) = -(3/2)*(a(n-1)+A355905(n-1)).at n=27A355906
• Let d(1)<d(2)<...<d(q) denote the divisors of an integer k. a(n) = k is the smallest k such that the sum of its first n divisors, s = d(1) + ... + d(n), is also a divisor of k.at n=40A375574