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A093579
Take m sheets of paper, arrange them into piles, write on each sheet the cardinality (number of sheets) of its pile. Do this again, so each sheet is labeled by an ordered pair of positive integers. An integer m is in this sequence if there is a way to do this such that every sheet has a unique label, i.e., if A093578(m) > 0.
1
0, 1, 3, 4, 6, 7, 10, 11, 13, 14, 15, 16, 18, 19, 21, 22, 24, 25, 27, 28, 29, 31, 32, 34, 35, 36, 37, 39, 40, 42, 43, 45, 46, 47, 48, 49, 50, 51, 52, 55, 56, 58, 59, 61, 62, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 76, 77, 78, 79, 80, 81, 82, 84, 85, 88, 89, 91, 92, 93, 94, 95
OFFSET
0,3
EXAMPLE
4 is in this sequence because A093578(4) = 1 > 0; 5 is not in this sequence because A093578(5) = 0.
CROSSREFS
Sequence in context: A092494 A274429 A050618 * A347752 A060832 A341292
KEYWORD
easy,nonn
AUTHOR
Howard A. Landman, Apr 01 2004
STATUS
approved