Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63 and 128*k-127 are also products of two distinct primes.
A177216
Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63 and 128*k-127 are also products of two distinct primes.
Terms
- a(0) =11293a(1) =12139a(2) =25399a(3) =31261a(4) =36199a(5) =44869a(6) =49471a(7) =62521a(8) =72397a(9) =83086a(10) =89737a(11) =91705a(12) =98941a(13) =124846a(14) =125041a(15) =134023a(16) =138994a(17) =144793a(18) =164041a(19) =166171a(20) =170431a(21) =173311a(22) =182527a(23) =199543a(24) =224962a(25) =244294a(26) =258169a(27) =259891a(28) =263086a(29) =275281
External references
- oeis: A177216