Applicable to many (but not all) citizens of the following countries (as listed by the GoI):

Australia, Brazil, Cambodia, Cook Islands, Djibouti, Federated States of Micronesia, Fiji, Finland, Germany, Indonesia, Israel, Japan, Jordan, Kenya, Kingdom of Tongo, Laos, Luxembourg, Mauritius, Mexico, Myanmar, New Zealand, Niue, Norway, Oman, Palestine, Papua & New Guinea, Philippines, Republic of Kiribati, Republic of Korea (i.e. South Korea), Republic of Marshall Islands, Republic of Nauru, Republic of Palau, Russia, Samoa, Singapore, Solomon Islands, Thailand, Tuvalu, UAE, Ukraine, USA, Vietnam and Vanuatu.

The number of countries noted above by the Indian government is greater than 28. Thread title revision.