A067678 Numbers m such that sigma(4*m+3) = 6*m.

2, 8, 12, 600, 5082, 13680, 17160, 25920, 265200, 1256640, 3591600, 23919840, 42923520, 351195264, 1642291200, 12572386944, 15043279104

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Prog

(PARI) isok(m) = sigma(4*m+3) == 6*m; \\ Michel Marcus, Feb 17 2021

Crossrefs

Cf. A000203, A067679.

Sequence in context: A001229 A298640 A120000 * A134905 A220140 A344152

Adjacent sequences: A067675 A067676 A067677 * A067679 A067680 A067681

Keyword

nonn,more

Author

Benoit Cloitre, Feb 04 2002

Extensions

a(9)-a(17) from Donovan Johnson, Feb 01 2009

Status

approved