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A075635
a(1) = 1 and then group the composite numbers so that the n-th group contains n numbers with a prime sum: (1), (4, 9), (6, 8, 15), (10, 12, 14, 25), (16, 18, 20, 21, 22), ...
3
1, 4, 9, 6, 8, 15, 10, 12, 14, 25, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 42, 40, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 69, 63, 64, 65, 66, 68, 70, 72, 74, 75, 84, 76, 77, 78, 80, 81, 82, 85, 86, 87, 88, 91, 90, 92, 93, 94, 95
OFFSET
1,2
EXAMPLE
1; 4,9; 6,8,15; 10,12,14,25; 16,18,20,21,22; ...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Amarnath Murthy, Sep 30 2002
EXTENSIONS
More terms from David Wasserman, Jan 22 2005
STATUS
approved