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A014364 Aliquot sequence starting at 1074. 3
1074, 1086, 1098, 1320, 3000, 6360, 13080, 26520, 64200, 136680, 303960, 668040, 1448760, 2897880, 6778920, 14760600, 31761720, 75003840, 189623520, 475142400, 1262108388, 1723154620, 2250655556, 1742856988 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

R. K. Guy, Unsolved Problems in Number Theory, B6.

LINKS

R. J. Mathar, Table of n, a(n) for n = 0..881

Christophe Clavier, Aliquot Sequences

Paul Zimmermann, Latest information

Index entries for sequences related to aliquot parts.

FORMULA

a(n+1)= A000203(a(n))-a(n). - R. J. Mathar, Oct 08 2017

PROG

(PARI) a(n, a=1074)={for(i=1, n, a=sigma(a)-a); a} \\ M. F. Hasler, Feb 24 2018

CROSSREFS

Cf. A098007 (length of aliquot sequences). Some other examples: A008885 (starting at 30) .. A008892 (starting at 276), A014360 (starting at 552) .. A014365 (starting at 1134), ..., A171103 (starting at 46758). See link to index for a more complete list.

Sequence in context: A085337 A085338 A250636 * A031779 A237213 A235959

Adjacent sequences:  A014361 A014362 A014363 * A014365 A014366 A014367

KEYWORD

nonn

AUTHOR

Paul Zimmermann

STATUS

approved

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Last modified November 21 12:20 EST 2019. Contains 329370 sequences. (Running on oeis4.)