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Generalized Woodall primes of the form n•4n-1

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Current data

ASCII format : n*4^n-1
Base : 4
Count : 21
Max n : 2,000,000
Date : 2015
1[1], 2[2], 3[3], 5[4], 8[5], 14[6], 23[7], 63[8], 107[9], 132[10], 428[11], 530[12], 1137[13], 1973[14], 2000[15], 7064[16], 20747[17], 79574[18], 113570[19], 293912[20], 1993191[21]
Remarks :
The sequence A086661 in OEIS

Notes

  1. ↑ Twin n=1, 22-1, Near Woodall: 2•21-1 & 1•22-1
  2. ↑ 25-1, Near Woodall: 4•23-1
  3. ↑ Twin n=3, 3•26-1, Near Woodall: 6•25-1
  4. ↑ 5•210-1, Near Woodall: 10•29-1
  5. ↑ 219-1, Near Woodall: 16•215-1
  6. ↑ 7•229-1, Near Woodall: 28•227-1
  7. ↑ 23•246-1, Near Woodall: 46•245-1
  8. ↑ 63•2126-1, Near Woodall: 126•2125-1
  9. ↑ 107•2214-1, Near Woodall: 214•2213-1
  10. ↑ 33•2266-1, Near Woodall: 264•2263-1
  11. ↑ 107•2858-1, Near Woodall: 856•2855-1
  12. ↑ 265•21061-1, Near Woodall: 1060•21059-1
  13. ↑ 1137•22274-1, Near Woodall: 2274•22273-1
  14. ↑ 1973•23946-1, Near Woodall: 3946•23945-1
  15. ↑ 125•24004-1, Near Woodall: 4000•23999-1
  16. ↑ 883•214131-1, Near Woodall: 14128•214127-1
  17. ↑ 20747•241494-1, Near Woodall: 41494•241493-1
  18. ↑ 39787•2159149-1, Near Woodall: 159148•2159147-1
  19. ↑ 56785•2227141-1, Near Woodall: 227140•2227139-1
  20. ↑ 36739•2587827-1, Near Woodall: 587824•2587823-1
  21. ↑ 1993191•23986382-1, Near Woodall: 3986382•23986381-1

History

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