A306748 Unitary untouchable numbers with a record gap to the next unitary untouchable number.

2, 5, 7, 998, 15402, 21878, 382032

Offset: 1

Author

Amiram Eldar, Mar 07 2019

Keywords

• nonn
• hard
• more

Comments

The record gap values are 1, 2, 367, 544, 556, 780, 782.

Examples

			5 is in the sequence since it is a unitary untouchable number and the next unitary untouchable number after it is 7 = 5 + 2 with a record gap of 2. The next gap which is larger than 2 occurs at 7 which is followed by 374 = 7 + 367.
		

Crossrefs

Cf. A063948, A306747.