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

14, 3, 42, 62, 19, 9, 241, 121, 348, 9, 138, 320, 84, 1870, 66, 1331, 58, 1268, 362, 384, 937, 81, 2220, 2910, 1911, 2358, 1359, 1306, 888, 264, 728, 845, 708, 119, 379, 1022, 982, 4471, 1351, 3375, 1234, 2486, 1911, 179, 750, 6482, 412, 831, 2386, 1810

Offset

1,1

Comments

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

Links

Table of n, a(n) for n=1..50.

Example

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

Crossrefs

Cf. A000040, A063990, A163653.

Sequence in context: A204159 A040190 A317314 * A060782 A182431 A182440

Adjacent sequences: A163644 A163645 A163646 * A163648 A163649 A163650

Keyword

nonn

Author

Juri-Stepan Gerasimov, Aug 02 2009

Extensions

a(4) corrected and sequence extended - R. J. Mathar, Aug 07 2009

Status

approved