A257604 Congruentful numbers. Numbers that are not congruentfree. Complement of A253278.

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

Links

Table of n, a(n) for n=1..75.

Example

10 is in this sequence because the positive integer 10 is divisible by congruent number 5.

Crossrefs

Cf. A003273, A253278.

Sequence in context: A092858 A138966 A184804 * A177089 A206415 A162317

Adjacent sequences: A257601 A257602 A257603 * A257605 A257606 A257607

Keyword

nonn,easy

Author

Juri-Stepan Gerasimov, May 06 2015

Status

approved