23704

Appears in sequences

• Number of primes between successive Fibonacci numbers exclusive.at n=28A052011
• Interprimes which are of the form s*prime, s=8.at n=35A075283
• Number of primes between successive Fibonacci numbers inclusive.at n=29A076777
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (-1, 0, 1), (-1, 1, -1), (1, 0, 0)}.at n=12A148008
• Positive integers of the form (7*m^2+1)/11.at n=35A179370
• For positive n with prime decomposition n = Product_{j=1..m} (p_j^k_j) define A_n = Sum_{j=1..m} (p_j*k_j) and B_n = Sum_{j=1..m} (p_j^k_j). This sequence gives those n for which A_n and B_n are both prime and B_n = A_n + 2 (i.e., form a twin prime pair).at n=41A185718
• Number of compositions of n into parts 1, 8, 9.at n=43A322405
• Number of edges formed in a square by straight line segments when connecting the n-1 points between each corner that divide each edge into n equal parts to the n-1 points on the edge on the opposite side of the square.at n=10A355800
• G.f. satisfies A(x) = 1 + x / (1 - x*A(x))^4.at n=8A365114