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A072566 Numbers n such that n and sigma(n) end with the same digit in base 10. 2
1, 14, 34, 40, 44, 74, 78, 81, 84, 94, 120, 124, 134, 138, 164, 190, 194, 198, 204, 214, 224, 244, 254, 258, 270, 274, 280, 284, 290, 294, 314, 318, 334, 360, 361, 364, 380, 394, 404, 438, 440, 441, 444, 454, 462, 498, 514, 520, 524, 528, 540, 544, 554, 558 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..54.

FORMULA

Probably lim n -> infinity a(n)/n = 10.

PROG

(PARI) isok(n) = (n % 10) == (sigma(n) % 10); \\ Michel Marcus, Nov 26 2013

CROSSREFS

Cf. A000203.

Sequence in context: A158899 A085777 A329062 * A039449 A120875 A103533

Adjacent sequences:  A072563 A072564 A072565 * A072567 A072568 A072569

KEYWORD

base,nonn

AUTHOR

Benoit Cloitre, Aug 06 2002

STATUS

approved

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Last modified February 27 06:36 EST 2020. Contains 332299 sequences. (Running on oeis4.)