A280616 - OEIS

%I #17 Jan 16 2017 14:12:53

%S 3,4,9,8,16,18,26,32,24,36,42,44,48,66,70,60,74,72,94,106,84,90,102,

%T 112,130,108,126,114,166,160,150,144,184,218,174,208,168,220,138,222,

%U 232,204,216,262,302,268,234,252,246,240,264,276,306,270,340,318,294,312,342,336,406,330,324

%N Smallest m such that the m - s is a prime for exactly n distinct squarefree numbers s.

%e a(1) = 3 because 3 - 1 = 2 is prime where 1 is squarefree number.

%e a(2) = 4 because 4 - 1 = 3 and 4 - 2 = 2 are primes where 1 and 2 are squarefree numbers.

%e a(3) = 9 because 9 - 2 = 7, 9 - 6 = 3, 9 - 7 = 2 are primes where 2, 6, 7 are squarefree numbers.

%Y Cf. A004767, A005117, A098983, A279027.

%K nonn

%O 1,1

%A _Juri-Stepan Gerasimov_, Jan 06 2017