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A135409 Sum of all n-digit Keith numbers. 0
0, 244, 939, 38842, 399158, 3185054, 8997888, 89003533, 380705305, 0, 120958456566, 909738914355, 10691161155707, 215413743487843, 1146359095715014, 11741086634604569, 186260344930883645, 586697640742217928, 22434377949474656108, 86030233471862779595 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

There are no 1-digit and 10-digit Keith numbers.

LINKS

Table of n, a(n) for n=1..20.

_Jason Earls_ and Eric Weisstein's World of Mathematics, Keith Number.

EXAMPLE

Sum of all 2-digit Keith numbers is 244.

Sum of all 3-digit Keith numbers is 939.

Sum of all 4-digit Keith numbers is 38842.

CROSSREFS

Cf. A007629.

Sequence in context: A234262 A031786 A328206 * A203349 A262092 A178266

Adjacent sequences:  A135406 A135407 A135408 * A135410 A135411 A135412

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi, Dec 10 2007

EXTENSIONS

Extended by T. D. Noe, Mar 15 2011

STATUS

approved

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Last modified December 8 01:00 EST 2021. Contains 349590 sequences. (Running on oeis4.)