The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A118363

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A118363

Factorial base Niven (or Harshad) numbers: numbers that are divisible by the sum of their factorial base digits.
(history; published version)

#36 by Michael De Vlieger at Tue Oct 08 18:38:43 EDT 2024

STATUS

reviewed

approved

#35 by Andrew Howroyd at Tue Oct 08 17:55:28 EDT 2024

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proposed

reviewed

#34 by Amiram Eldar at Tue Oct 08 13:02:05 EDT 2024

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editing

proposed

#33 by Amiram Eldar at Tue Oct 08 13:01:58 EDT 2024

CROSSREFS

Cf. A007623 (Integers integers written in factorial base), A005349 (Base base 10 Harshad numbers).

Cf. A286607 (complement), A034968, A286590.

STATUS

proposed

editing

#32 by Amiram Eldar at Tue Oct 08 10:39:02 EDT 2024

STATUS

editing

proposed

#31 by Amiram Eldar at Tue Oct 08 10:38:06 EDT 2024

LINKS

Paul Dahlenberg and Tom Edgar, <a href="https://www.fq.math.ca/Papers1/56-2/dalenberb011718.pdf">, Consecutive factorial base Niven numbers</a>, The Fibonacci Quarterly, Vol. 56, No. 2 (2018), pp. 163-166.

Discussion

Tue Oct 08

10:39

Amiram Eldar: Replaced the dead link for the preprint with the published version link.

#30 by Amiram Eldar at Tue Oct 08 10:37:12 EDT 2024

REFERENCES

Paul Dahlenberg and T. Edgar, Consecutive factorial base Niven numbers, Fib. Q., 56:2 (2018), 163-166.

LINKS

Paul Dahlenberg and T. Tom Edgar, <a href="https://communitywww.fq.plumath.educa/Papers1/~edgartj56-2/consecutivefactnivendalenberb011718.pdf">, Consecutive factorial base Niven numbers</a>, preprintThe Fibonacci Quarterly, Vol. 56, No. 2 (2018), pp. 163-166.

<a href="/index/Fa#facbase">Index entries for sequences related to factorial base representation</a>.

PROG

(PARI) is(n) = {my(k = n, m = 2, r, s = 0); while([k, r] = divrem(k, m); k != 0 || r != 0, s += r; m++); !(n % s); } \\ Amiram Eldar, Oct 08 2024

STATUS

approved

editing

#29 by Andrew Howroyd at Fri May 14 12:17:01 EDT 2021

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reviewed

approved

#28 by Joerg Arndt at Fri May 14 11:08:14 EDT 2021

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proposed

reviewed

#27 by Michel Marcus at Fri May 14 10:14:16 EDT 2021

STATUS

editing

proposed