A174535 Odd almost practical numbers.

945, 1575, 2205, 2835, 3465, 4095, 4725, 5355, 5775, 5985, 6615, 6825, 7245, 7875, 8085, 8505, 9135, 9555, 9765, 10395, 11025, 11655, 12285, 12705, 12915, 13545, 14175, 14805, 15015, 15435, 16065, 16695, 17325, 17955, 18585, 19215, 19635

Offset

1,1

Comments

This is Stewart's set O*. Note that 15 divides all such numbers. This sequence appears to be a subsequence of the odd abundant numbers, A005231. See A174533 for additional comments.

Links

Amiram Eldar, Table of n, a(n) for n = 1..1000

B. M. Stewart, Sums of distinct divisors, American Journal of Mathematics, Vol. 76, No. 4 (1954), pp. 779-785.

Crossrefs

Cf. A174533, A174534.

Sequence in context: A252185 A005231 A174865 * A243104 A006038 A287646

Adjacent sequences: A174532 A174533 A174534 * A174536 A174537 A174538

Keyword

nonn

Author

T. D. Noe, Mar 21 2010

Status

approved