A393285 - OEIS

A393285

Terms in Recamán's sequence A005132 which are the result of a record number of subtraction steps.

2, 18, 40, 204, 58090, 18959146, 2549193471, 11869100185104, 4143884461472, 3949869565743189, 92130539271115691, 74936977518610576204325239673

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

OFFSET

1,1

COMMENTS

A392407 gives corresponding indices into A005132.

LINKS

Benjamin Chaffin, Table of n, a(n) for n = 1..13

EXAMPLE

Let R(n) = n-th term of Recamán's sequence (A005132). R(108)..R(111) are 370, 261, 151, 40; so R(111)=40 is the result of three consecutive subtraction steps, and is the first such R(n). Thus a(3) = 40.

CROSSREFS

Cf. A005132, A392407 (corresponding indices), A390717 (record addition indices), A393284 (record addition terms), A057165 (addition steps), A057166 (subtraction steps).

Sequence in context: A050594 A098857 A189333 * A072278 A296266 A365493

Adjacent sequences: A393282 A393283 A393284 * A393286 A393287 A393288

KEYWORD

nonn

AUTHOR

Benjamin Chaffin, Feb 09 2026

STATUS

approved