A084260 Triangular numbers that set a new record for number of triangular divisors.

1, 3, 6, 36, 105, 120, 210, 630, 5460, 25200, 73920, 97020, 157080, 1185030, 2031120, 2162160, 17907120, 76576500, 236215980, 7534947420, 12249176940, 78091322400, 203522319000, 666365279580, 2427046221600, 3638780505360, 12112252031880, 70233049766880, 108825865948800

Offset

1,2

Comments

2*a(n) is oblong numbers that set a new record for number of oblong divisors. - Ray Chandler, Jun 29 2008

Corresponding record values for number of divisors are in A141283.

Links

Amiram Eldar, Table of n, a(n) for n = 1..33

Crossrefs

Cf. A000217, A076982, A076983, A141283.

Sequence in context: A119196 A119184 A350991 * A076983 A068084 A003674

Adjacent sequences: A084257 A084258 A084259 * A084261 A084262 A084263

Keyword

nonn

Author

Jason Earls, Jun 21 2003

Extensions

Extended by Ray Chandler, Jun 21 2008

a(28)-a(29) from Amiram Eldar, Jun 23 2023

Status

approved