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A163647 The count of primes between the (2n-1)-st and (2n)-th amicable number. 1

%I #7 Jul 28 2019 08:35:56

%S 14,3,42,62,19,9,241,121,348,9,138,320,84,1870,66,1331,58,1268,362,

%T 384,937,81,2220,2910,1911,2358,1359,1306,888,264,728,845,708,119,379,

%U 1022,982,4471,1351,3375,1234,2486,1911,179,750,6482,412,831,2386,1810

%N The count of primes between the (2n-1)-st and (2n)-th amicable number.

%C The number of terms in the n-th row of A163653.

%e a(2)=3 counts the 3 primes 1187, 1193, 1201 between 1184 and 1210.

%Y Cf. A000040, A063990, A163653.

%K nonn

%O 1,1

%A _Juri-Stepan Gerasimov_, Aug 02 2009

%E a(4) corrected and sequence extended - _R. J. Mathar_, Aug 07 2009

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Last modified May 18 15:02 EDT 2024. Contains 372641 sequences. (Running on oeis4.)