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A187208 Numbers such that the last of the absolute differences of divisors is 1. 4
1, 2, 4, 8, 12, 16, 20, 32, 36, 48, 64, 80, 108, 112, 128, 156, 192, 204, 220, 252, 256, 260, 272, 304, 320, 324, 368, 396, 448, 476, 484, 512, 544, 608, 656, 660, 688, 768, 972, 1008, 1024, 1044, 1120, 1184, 1248, 1280, 1300, 1332, 1476, 1764, 1792, 1908 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers n such that A187203(n) = 1.

A000079 is a subsequence (powers of 2). [Reinhard Zumkeller, Aug 02 2011]

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

PROG

(Haskell)

import Data.List (elemIndices)

a187208 n = a187208_list !! (n-1)

a187208_list = map (+ 1) $ elemIndices 1 $ map a187203 [1..]

-- Reinhard Zumkeller, Aug 02 2011

CROSSREFS

Cf. A027750, A187202, A187203, A187204, A187205.

Sequence in context: A160742 A160736 A118030 * A256409 A256403 A308013

Adjacent sequences:  A187205 A187206 A187207 * A187209 A187210 A187211

KEYWORD

nonn

AUTHOR

Omar E. Pol, Aug 01 2011

STATUS

approved

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Last modified April 17 02:26 EDT 2021. Contains 343059 sequences. (Running on oeis4.)