A010344 Base-4 Armstrong or narcissistic numbers (written in base 10).

1, 2, 3, 28, 29, 35, 43, 55, 62, 83, 243

Offset: 1

Author

N. J. A. Sloane

Keywords

• base
• fini
• full
• nonn

Links

• Eric Weisstein's World of Mathematics, Narcissistic Number
• D. T. Winter, Table of Armstrong Numbers

Crossrefs

Cf. A010343 (a(n) written in base 4).

In other bases: A010346 (base 5), A010348 (base 6), A010350 (base 7), 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).

Programs

PARI

A010344=select( n->n==vecsum([d^#n|d<-n=digits(n,4)]), [0..333]) \\ M. F. Hasler, Nov 18 2019

Extensions

Edited by Joseph Myers, Jun 28 2009