A252474 - OEIS

A252474

Record values in A246785.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 52, 53, 55, 57, 59, 60, 61

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

For all known terms of this sequence, a(n+1) < a(n)+3; is this true for all terms? - Farideh Firoozbakht, Dec 20 2014

Integers not in this sequence begin: 13, 31, 34, 51, 54, 56, 58.

The comment above could also be phrased as "no two consecutive numbers in the complement" or "no gaps larger than one". But one sees that the missing numbers become more frequent towards larger values, so the answer to the question might well be "no". - Robert Price, Jan 06 2015

LINKS

Table of n, a(n) for n=1..54.

CROSSREFS

Cf. A182134, A246785, A246790.

Sequence in context: A011760 A085265 A180004 * A172270 A023806 A113763

Adjacent sequences: A252471 A252472 A252473 * A252475 A252476 A252477

KEYWORD

more,hard,nonn

AUTHOR

Robert Price, Dec 17 2014

STATUS

approved