Number of factorizations of m^2 into 2 factors, where m is a product of exactly n distinct primes and each factor is a product of n primes (counted with multiplicity).
A257520
Number of factorizations of m^2 into 2 factors, where m is a product of exactly n distinct primes and each factor is a product of n primes (counted with multiplicity).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =71a(7) =197a(8) =554a(9) =1570a(10) =4477a(11) =12827a(12) =36895a(13) =106471a(14) =308114a(15) =893804a(16) =2598314a(17) =7567466a(18) =22076405a(19) =64498427a(20) =188689685a(21) =552675365a(22) =1620567764a(23) =4756614062a(24) =13974168191a(25) =41088418151a(26) =120906613076a(27) =356035078102
External references
- oeis: A257520