

A075313


Pair the natural numbers such that the nth pair is (k, k+prime(n)) where k is the smallest number not occurring earlier and prime(n) is the nth 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 first member of every pair.


3



1, 2, 4, 6, 7, 8, 10, 11, 12, 14, 15, 16, 17, 19, 20, 22, 23, 24, 25, 26, 28, 29, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 44, 45, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 59, 60, 61, 63, 64, 65, 66, 68, 69, 70, 71, 72, 73, 74, 76, 77, 78, 79, 80, 81, 83, 84, 86, 87, 88, 89
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OFFSET

1,2


LINKS



CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS



STATUS

approved



