21774

Appears in sequences

• Coordination sequence for MgZn2, Position Zn1.at n=37A009937
• Numbers k such that 2^k + k^3 + 1 is prime.at n=17A100358
• Even numbers that are not congruent to 1 mod 3 nor are squares nor are the sum of a prime and a square of a prime.at n=11A109136
• Number of 0..n arrays x(0..8) of 9 elements with zero 5th differences.at n=30A200332
• Number of (w,x,y,z) with all terms in {1,...,n} and w >= (geometric mean of x,y,z).at n=14A212142
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 147", based on the 5-celled von Neumann neighborhood.at n=32A270292
• Numbers k == 0 or 2 (mod 6) which are not the sum of a prime and the square of a prime.at n=26A306394
• Number of regions in an equilateral triangle "frame" of size n.at n=13A328526
• Number of 4-cycles in the n-cycle complement and (n+1)-wheel complement graph.at n=21A367985
• Total number of partitions of [n-s] whose block maxima sum to s, summed over all s.at n=38A368102