The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A036228

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A036228

a(1) = 31; a(n+1) = a(n) + sum of decimal digits of a(n).
(history; published version)

#18 by N. J. A. Sloane at Sat Dec 25 18:35:23 EST 2021

LINKS

D. R. Kaprekar, <a href="/A003052/a003052_2.pdf">The Mathematics of the New Self Numbers</a> [annotated and scanned]

Discussion

Sat Dec 25

18:35

OEIS Server: https://oeis.org/edit/global/2926

#17 by Harvey P. Dale at Thu Jan 30 19:46:49 EST 2020

STATUS

editing

approved

#16 by Harvey P. Dale at Thu Jan 30 19:46:46 EST 2020

LINKS

Harvey P. Dale, <a href="/A036228/b036228.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#15 by Harvey P. Dale at Thu Jan 30 19:45:27 EST 2020

STATUS

editing

approved

#14 by Harvey P. Dale at Thu Jan 30 19:45:24 EST 2020

MATHEMATICA

NestList[#+Total[IntegerDigits[#]]&, 31, 60] (* Harvey P. Dale, Jan 30 2020 *)

STATUS

approved

editing

#13 by N. J. A. Sloane at Fri Nov 07 15:44:47 EST 2014

LINKS

D. R. Kaprekar, <a href="/A003052/a003052.pdf">Puzzles The Mathematics of the New Self- Numbers</a> [annotated and scanned]

Discussion

Fri Nov 07

15:44

OEIS Server: https://oeis.org/edit/global/2349

#12 by N. J. A. Sloane at Thu Nov 06 18:12:28 EST 2014

STATUS

editing

approved

#11 by N. J. A. Sloane at Thu Nov 06 18:12:25 EST 2014

LINKS

D. R. Kaprekar, <a href="/A003052/a003052.pdf">Puzzles of the Self-Numbers</a> [annotated and scanned]

STATUS

approved

editing

#10 by N. J. A. Sloane at Thu Oct 30 13:59:48 EDT 2014

STATUS

editing

approved

#9 by N. J. A. Sloane at Thu Oct 30 13:59:45 EDT 2014

REFERENCES

D. R. Kaprekar, The Mathematics of the New Self Numbers, Privately Printed, 311 Devlali Camp, Devlali, India, 1963.

STATUS

approved

editing