28634

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (F(2), F(3), F(4), ...), t = A014306.at n=39A025110
• Number of nonisomorphic semigroups of order n.at n=6A027851
• a(n) = Fibonacci(n) - n.at n=23A065220
• Number of peaks at even level in all nondecreasing Dyck paths of semilength n. A nondecreasing Dyck path is a Dyck path for which the sequence of the altitudes of the valleys is nondecreasing.at n=10A121486
• If Fibonacci(prime(k)) is prime, append Fibonacci(prime(k)) - prime(k) to the sequence.at n=6A134788
• Number of right triangles on a (n+1)X9 grid.at n=13A189813
• Number of compositions (ordered partitions) of n into Lucas numbers (beginning with 1) (A000204).at n=22A288039
• Number of partitions of n^3 into distinct cubes > 1.at n=45A298848
• Numbers k such that the prime gap between the consecutive primes p1 < k^2 < p2 sets a new record.at n=23A350100