A010343 Base-4 Armstrong or narcissistic positive numbers.

1, 2, 3, 130, 131, 203, 223, 313, 332, 1103, 3303

Offset

1,2

Links

Table of n, a(n) for n=1..11.

Eric Weisstein's World of Mathematics, Narcissistic Number

D. T. Winter, Table of Armstrong Numbers

Formula

a(n) = A007090(A010344(n)). - M. F. Hasler, Nov 18 2019

Prog

(PARI) [fromdigits(digits(n, 4))|n<-A010344] \\ M. F. Hasler, Nov 18 2019

Crossrefs

Cf. A010344 (a(n) written in base 10).

In other bases: A010345 (base 5), A010347 (base 6), A010349 (base 7), A010351 (base 8), A010352 (base 9), A005188 (base 10).

Sequence in context: A371230 A139129 A007608 * A118169 A066908 A057738

Adjacent sequences: A010340 A010341 A010342 * A010344 A010345 A010346

Keyword

base,fini,full,nonn

Author

N. J. A. Sloane

Extensions

Edited by Joseph Myers, Jun 28 2009

"Positive" added to definition. - N. J. A. Sloane, Nov 18 2019

Status

approved