18488

Appears in sequences

• a(n) = sum_{k=1..n} prime(k)*prime(k+1).at n=16A074745
• Number of series-reduced balanced trees with n leaves.at n=26A120803
• Partial sums of A003325.at n=43A139211
• a(n) = 64*n^2 - 8.at n=16A158487
• Number of binary strings of length n with equal numbers of 00001 and 00110 substrings.at n=15A164196
• Number of 4-step one space at a time bishop's tours on an n X n board summed over all starting positions.at n=24A187157
• Numbers k such that 3^k + 8 is prime.at n=19A217136
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 467", based on the 5-celled von Neumann neighborhood.at n=29A272320
• Number of integers in n-th generation of tree T(-5/2) defined in Comments.at n=26A274155
• Number of nX3 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=10A302304
• Number of compositions of n whose circular differences are all 1 or -1.at n=49A325589
• a(n) = (n-1)! * Sum_{d|n} d/(d-1)!.at n=7A370580
• Consecutive states of the linear congruential pseudo-random number generator 172*s mod 30307 when started at s=1.at n=24A385032