143262

Appears in sequences

• a(n) = n*(n + 1)*(n^2 + n + 2)/4.at n=27A001621
• Coordination sequence for A_27 lattice.at n=2A035853
• Numbers representable in exactly two ways as (p-1)*p^e (where p is a prime and e >= 0) in ascending order.at n=27A114874
• List of integers m>0 with m-1 and m+1 both prime, and m-2, m, m+2 all practical.at n=23A209236
• z-value of the lexicographically first solution (x,y,z) of 4/n = 1/x + 1/y + 1/z with 0 < x < y < z all integers, or 0 if there is no such solution. Corresponding x and y values are in A257839 and A257840.at n=53A257841
• Depth of Pascal's triangle such that the number of elements in the triangle is a factor of the sum of the elements.at n=31A272934
• Totients congruent to 2 mod 4 and that have multiplicity 4.at n=14A334839