26447

Appears in sequences

• Numbers k such that the smoothly undulating palindromic number (38*10^k - 83)/99 is a prime.at n=9A062220
• Composite numbers generated by the Euler polynomial x^2 + x + 41.at n=32A145292
• a(n) = number of components of the graph P(n,3) (defined in Comments).at n=12A145671
• Semiprimes generated by the Euler polynomial x^2 + x + 41.at n=32A228183
• Sequence of distinct least nonnegative numbers such that the average of the first n terms is a cube.at n=31A245621
• Noncube factors k > 0 such that k*x^3 + 1 produces a new minimum of its Hardy-Littlewood constant.at n=19A342566
• Sum over all complete compositions of n of the element set cardinality.at n=15A373305