154582

Appears in sequences

• Semiprime numbers that are sandwiched between products of exactly 4 distinct primes (or tetraprimes).at n=14A375964
• Numbers k with the property that k is the next lexicographically earliest number that cannot be expressed as a linear sum of the squares of preceding terms of the sequence with coefficients of 0, +1 or -1, with a(1)=1.at n=22A390487