1327103

Appears in sequences

• Product of twin primes of form (4*k+3,4*(k+1)+1), k>=0.at n=19A071700
• Number of chains in the power set lattice or the number of fuzzy subsets of an (n+5)-element set X_(n+5) with specification n elements of one kind, 4 elements of another and 1 of yet another kind.at n=6A107955
• Numbers n such that for any positive integers (a, b), if a * b = n then a + b is a square.at n=4A235334
• G-Lehmer numbers: Composite numbers k such that A060968(k) divides A201629(k).at n=26A235864
• Numbers k such that k and k+1 are both nonprime-powers whose all distinct prime divisors are consecutive primes (A066312).at n=22A346910
• Numbers m such that the sum of its distinct prime factors and the sum of its nonprime divisors are both squares.at n=7A380953