77842

Appears in sequences

• Fibonacci sequence beginning 1, 18.at n=19A022108
• Digit sum of Fibonacci primes.at n=32A139537
• Number of partitions p of n such that the number of numbers having multiplicity 1 in p is a part of p.at n=47A241413
• Number of circular arrangements of the first n positive integers such that adjacent terms have absolute difference 1 or 4.at n=40A336749
• a(n) = 2*(-i)^n*(n*sin(c*(n+1)) - i*sin(-c*n))/sqrt(5) where c = arccos(i/2).at n=18A354044