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A306748 Unitary untouchable numbers with a record gap to the next unitary untouchable number. 0
2, 5, 7, 998, 15402, 21878, 382032 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

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.

Sequence in context: A252283 A007571 A062621 * A241292 A248510 A020772

Adjacent sequences:  A306745 A306746 A306747 * A306749 A306750 A306751

KEYWORD

nonn,hard,more

AUTHOR

Amiram Eldar, Mar 07 2019

STATUS

approved

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Last modified October 21 01:08 EDT 2019. Contains 328291 sequences. (Running on oeis4.)