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URL: https://oeis.org/A010350

⇱ A010350 - OEIS

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A010350
Base-7 Armstrong or narcissistic numbers (written in base 10).
15
1, 2, 3, 4, 5, 6, 10, 25, 32, 45, 133, 134, 152, 250, 3190, 3222, 3612, 3613, 4183, 9286, 35411, 191334, 193393, 376889, 535069, 794376, 8094840, 10883814, 16219922, 20496270, 32469576, 34403018, 416002778, 416352977, 420197083, 725781499, 1500022495, 15705029375, 15705029376, 28700208851
OFFSET
1,2
COMMENTS
Like the other single-digit terms, zero would satisfy the definition (n = Sum_{i=1..k} d[i]^k when d[1..k] are the digits of n), but here only positive numbers are considered. - M. F. Hasler, Nov 20 2019
LINKS
Joseph Myers, Table of n, a(n) for n = 1..59 (the full list of terms, from Winter)
Eric Weisstein's World of Mathematics, Narcissistic Number
PROG
(PARI) select( {is_A010350(n)=n==vecsum([d^#n|d<-n=digits(n, 7)])}, [0..10^6]) \\ This yields only terms < 10^6, for illustration of is_A010350(). - M. F. Hasler, Nov 20 2019
CROSSREFS
Cf. A010349 (a(n) written in base 7).
In other bases: A010344 (base 4), A010346 (base 5), A010348 (base 6), A010354 (base 8), A010353 (base 9), A005188 (base 10), A161948 (base 11), A161949 (base 12), A161950 (base 13), A161951 (base 14), A161952 (base 15), A161953 (base 16).
Sequence in context: A306109 A281513 A270890 * A306581 A269858 A269848
KEYWORD
base,fini,full,nonn
EXTENSIONS
Edited by Joseph Myers, Jun 28 2009
STATUS
approved