A225789 Least triangular number of the form p*triangular(n) where p is a prime number, or 0 if no such triangular number exists.

0, 3, 6, 66, 190, 45, 105, 0, 2556, 1035, 5995, 8646, 1326, 16471, 210, 28680, 36856, 46971, 0, 72010, 630, 3003, 32131, 16836, 20100, 52975, 246051, 17766, 329266, 42195, 17205, 491536, 0, 17391, 0, 49770, 55278, 0, 30381, 5460, 0, 164451, 33411, 0, 4950, 85905, 584821

Offset

0,2

Links

Table of n, a(n) for n=0..46.

Formula

a(n) = A225787(n) * A000217(n).

Crossrefs

Cf. A000217, A068084, A225503, A225787.

Sequence in context: A137135 A069077 A214838 * A076551 A127637 A306451

Adjacent sequences: A225786 A225787 A225788 * A225790 A225791 A225792

Keyword

nonn

Author

Alex Ratushnyak, May 16 2013

Extensions

a(28) corrected by Mansour Qahwaji, Jul 25 2019

Status

approved