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A257604
Congruentful numbers. Numbers that are not congruentfree. Complement of A253278.
1
5, 6, 7, 10, 12, 13, 14, 15, 18, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 52, 53, 54, 55, 56, 58, 60, 61, 62, 63, 65, 66, 68, 69, 70, 71, 72, 74, 75, 76, 77, 78, 79, 80, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 100
OFFSET
1,1
COMMENTS
These are the positive integers divisible by a congruent number given in A003273. - Wolfdieter Lang, May 09 2015
EXAMPLE
10 is in this sequence because the positive integer 10 is divisible by congruent number 5.
CROSSREFS
Sequence in context: A092858 A138966 A184804 * A177089 A206415 A162317
KEYWORD
nonn,easy
AUTHOR
STATUS
approved