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A099658 a(n) is the smallest prime greater than 4(10^n - 1)/9. 1

%I #7 Oct 15 2013 22:32:35

%S 2,5,47,449,4447,44449,444449,4444469,44444453,444444457,4444444447,

%T 44444444497,444444444461,4444444444493,44444444444459,

%U 444444444444461,4444444444444463,44444444444444461,444444444444444469,4444444444444444537,44444444444444444447

%N a(n) is the smallest prime greater than 4(10^n - 1)/9.

%C a(n) = smallest prime > A002278(n).

%e n=4: 44 is followed by 47.

%t (First define NextPrime as in A057447) Table[NextPrime[4*(10^n-1)/9], {n, 0, 35}]

%Y Cf. A003618, A003617, A096497, A096498, A068104, A002275-A002283, A099656-A099668.

%K base,nonn

%O 0,1

%A _Labos Elemer_, Nov 17 2004

%E Checked by _N. J. A. Sloane_, Jan 27 2007

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Last modified April 24 15:42 EDT 2024. Contains 371960 sequences. (Running on oeis4.)