A182624 Primes in A182623.
7, 13, 29, 61, 101, 107, 199, 211, 229, 241, 419, 449, 467, 479, 769, 823, 829, 859, 991, 1009, 1021, 1571, 1601, 1637, 1667, 1697, 1733, 1811, 1847, 1877, 1901, 1907, 1931, 3079, 3109, 3229, 3271, 3307, 3331, 3457, 3499, 3529, 3541, 3547
Offset: 1
Links
- Nathaniel Johnston, Table of n, a(n) for n = 1..2000
Programs
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Maple
lim:=1800: with(numtheory):A182624:={}:for n from 1 to lim do s:="": for d in divisors(n) do s:= cat(s,convert(convert(d, binary),string)): od: m:=convert(parse(s),decimal,binary):if(isprime(m))then A182624:=A182624 union {m};fi: od: A182624:=sort(convert(A182624,list)):for n from 1 to nops(A182624) do if(A182624[n]>2*lim)then break:fi:printf("%d, ",A182624[n]):od: # Nathaniel Johnston, Apr 19 2011
Extensions
More terms from Vincenzo Librandi, Jan 30 2011
a(16) - a(44) from Nathaniel Johnston, Apr 19 2011