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A086494
Group the natural numbers such that the sum of the terms of every group has a distinct prime signature not occurring earlier: (1), (2), (3, 4, 5), (6), (7, 8, 9), (10, 11, 12, 13, 14), (15, 16, 17), (18, 19, 20, 21)... Sequence contains the sum of the terms of groups.
1
1, 2, 12, 6, 24, 60, 48, 78, 120, 27, 252, 36, 324, 336, 504, 448, 648, 729, 1701, 972, 1800, 128, 390, 1650, 289, 3276, 4860, 6930, 3510, 6084, 2430, 7776, 6552, 9072, 7560, 3375, 3456, 9200, 13680, 4032, 8778, 8160, 7440, 8704, 26136, 8640, 19800
OFFSET
0,2
CROSSREFS
Cf. A086495.
Sequence in context: A278255 A345469 A035877 * A354484 A107414 A133437
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Jul 28 2003
EXTENSIONS
Corrected and extended by Ray Chandler, Sep 16 2003
STATUS
approved