24606

Appears in sequences

• a(n) is the Fibonacci index of b(n) in the sequence b(1), b(2), ... where b(n) is the smallest Fibonacci number > b(n-1) such that b(1) + ... + b(n) is prime.at n=16A078743
• Number of walks of length n on hexagonal grid that start and end at the origin. Intermediate returns to the origin are not permitted.at n=8A094060
• a(n) = n*(n^2 + 2*n - 1)/2.at n=35A127736
• Smallest k such that A002522(k) and A002522(k+2n) are successive primes of the form m^2+1.at n=33A245463
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 123", based on the 5-celled von Neumann neighborhood.at n=28A285947
• Triangle read by rows where T(n,k) is the number of unlabeled connected multigraphs with loops with n edges and k vertices.at n=61A322115
• Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 1 + 3*x, p(n,x) = u*p(n-1,x) + v*p(n-2,x) for n >= 3, where u = p(2,x), v = 3 - x^2.at n=39A368152