Least triangular number of the form p*triangular(n) where p is a prime number, or 0 if no such triangular number exists.
A225789
Least triangular number of the form p*triangular(n) where p is a prime number, or 0 if no such triangular number exists.
Terms
- a(0) =0a(1) =3a(2) =6a(3) =66a(4) =190a(5) =45a(6) =105a(7) =0a(8) =2556a(9) =1035a(10) =5995a(11) =8646a(12) =1326a(13) =16471a(14) =210a(15) =28680a(16) =36856a(17) =46971a(18) =0a(19) =72010a(20) =630a(21) =3003a(22) =32131a(23) =16836a(24) =20100a(25) =52975a(26) =246051a(27) =17766a(28) =329266a(29) =42195
External references
- oeis: A225789