Number k such that k^2 + 1 = p*q*r where p,q,r are distinct primes and the sum p+q+r is a perfect square.
A261529
Number k such that k^2 + 1 = p*q*r where p,q,r are distinct primes and the sum p+q+r is a perfect square.
Terms
- a(0) =17a(1) =37a(2) =91a(3) =235a(4) =683a(5) =1423a(6) =1675a(7) =2879a(8) =8101a(9) =9595a(10) =13711a(11) =18799a(12) =19601a(13) =21295a(14) =25937a(15) =30059a(16) =32111a(17) =36251a(18) =39505a(19) =41071a(20) =49285a(21) =60719a(22) =79441a(23) =90575a(24) =93871a(25) =94799a(26) =103429a(27) =112571a(28) =132085a(29) =136075
External references
- oeis: A261529