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A076172 Triangular numbers with a triangular number of divisors which set a new record for number of divisors. 0

%I #16 Dec 15 2017 17:36:06

%S 1,28,496,2016,41616,270480,7874496,100472400,3877678080,103796842500,

%T 171463387200,1321327507500,152393548836372480,583286403740040000,

%U 1900657247182848000,9130869247932432000000

%N Triangular numbers with a triangular number of divisors which set a new record for number of divisors.

%C No more terms < 8.7*10^14. - _David Wasserman_, Apr 25 2005

%C a(17) <= 2474502187869188605771776000. - _Donovan Johnson_, Feb 28 2012

%e d(41616) = 45, d(270480) = 120.

%K more,nonn

%O 1,2

%A _Jason Earls_, Nov 01 2002

%E More terms from _David Wasserman_, Apr 25 2005

%E a(13)-a(15) from _Donovan Johnson_, Apr 26 2011

%E a(16) from _Donovan Johnson_, Feb 28 2012

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Last modified April 23 10:26 EDT 2024. Contains 371905 sequences. (Running on oeis4.)