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 A146316 Prime subtrahends of nearest squares producing prime differences 4
 2, 2, 5, 3, 2, 7, 5, 2, 11, 5, 3, 2, 17, 11, 3, 17, 13, 7, 5, 2, 23, 17, 5, 3, 2, 29, 23, 17, 5, 31, 17, 13, 11, 7, 2, 17, 11, 3, 2, 41, 23, 17, 5, 29, 19, 13, 7, 5, 29, 23, 17, 3, 2, 41, 23, 11, 2, 47, 43, 41, 37, 23, 19, 17, 13, 53, 47, 41, 11, 5, 3, 2, 59, 53, 47, 5, 3, 2, 67, 59, 47, 37 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Terms in A146315 + A146316 produce a square LINKS EXAMPLE a(6)=7 because when the prime 29 is subtracted from the square 36, the result is another prime, 7 PROG (UBASIC) 10 'sq less pr are prime 20 N=1:O=1:C=1 30 A=3:S=sqrt(N) 40 B=N\A 50 if B*A=N then 120 60 A=A+2 70 if A<=S then 40 80 R=O^2:Q=R-N 90 if N31 then stop 120 N=N+2:if N

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Last modified April 5 03:58 EDT 2020. Contains 333238 sequences. (Running on oeis4.)