18453

Appears in sequences

• Triangle of multi-edge stars with n edges by cyclotomic index.at n=71A010358
• a(n) = floor(binomial(n,4)/4).at n=38A011850
• a(n) = A024955(n+3)/7.at n=11A024956
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 90.at n=37A031588
• Numerators of continued fraction convergents to sqrt(770).at n=6A042484
• Numbers n such that Maple 9.5, Maple 10, Maple 11 and Maple 12 give the wrong answers for the number of partitions of n.at n=11A110375
• Number of permutations in S_n avoiding 1{bar 5}324 (i.e., every occurrence of 1324 is contained in an occurrence of a 15324).at n=8A137539
• 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, 0, 1), (-1, 1, 1), (0, 1, -1), (0, 1, 0), (1, -1, 1)}.at n=9A148490
• 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, 0, 1), (0, 1, -1), (0, 1, 1), (1, -1, 0), (1, 1, 1)}.at n=7A151000
• a(n) is the least integer k > 1 such that 1 + k^(5^n) + k^(2*5^n) + k^(3*5^n) + k^(4*5^n) is prime.at n=5A206418
• Number of length 3 0..n arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=25A244834
• Sum of the lengths of the arithmetic progressions in {1,2,3,...,n}, including trivial arithmetic progressions of lengths 1 and 2.at n=39A264100
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 446", based on the 5-celled von Neumann neighborhood.at n=33A272250
• Number of nX4 0..1 arrays with every element unequal to 1, 2, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=13A305512