A075315 Pair the natural numbers such that the n-th pair is (k, k+p(n)) where k is the smallest number not occurring earlier and p(n) is the n-th prime. (1, 3), (2, 5), (4, 9), (6, 13), (7, 18), (8, 21), (10, 27), (11, 30), (12, 35), (14, 43), ... This is the sequence of the sum of the members of every pair.

4, 7, 13, 19, 25, 29, 37, 41, 47, 57, 61, 69, 75, 81, 87, 97, 105, 109, 117, 123, 129, 137, 145, 153, 163, 169, 175, 181, 185, 191, 207, 213, 221, 227, 239, 245, 253, 261, 267, 275, 283, 289, 301, 305, 311, 317, 331, 345, 353, 357, 363, 371, 377, 389, 397, 405

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Crossrefs

Cf. A075313, A075314, A075316.

Sequence in context: A085787 A111710 A191138 * A238327 A243811 A194073

Adjacent sequences: A075312 A075313 A075314 * A075316 A075317 A075318

Keyword

nonn

Author

Amarnath Murthy, Sep 14 2002

Extensions

More terms from David Wasserman, Jan 16 2005

Status

approved