A261659 a(n) = sqrt(A261655(n)/144) for n>1.
1, 3, 5, 35, 33, 144, 80, 137, 285, 363, 387, 351, 204, 935, 225, 241, 289, 665, 1210, 310, 710, 324, 327, 685, 945, 749, 805, 479, 2091, 1260, 1169, 628, 2156, 654, 2355, 1827, 1545, 2181, 1499, 761, 3126, 1575, 2364, 1770, 1452, 1455, 2827, 1739, 3390, 4641
Offset: 2
Keywords
Examples
a(3)=3 because sqrt(A261655(3)/144) = sqrt(1296/144) = sqrt(9)=3.
Crossrefs
Cf. A261655: squares equal to the difference between two successive primes of the form k^2+2.
Programs
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Maple
q:=83:for n from 2 to 10^7 do:p:=n^2+2:if isprime(p) then x:=p-q:q:=p: z:=sqrt(x):if z=floor(z) then printf(`%d, `, x/144):else fi:fi:od:
Comments