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A327577 Numbers of zeroless polydivisible numbers with all digits the same in base n. 3
1, 4, 5, 10, 7, 26, 11, 20, 19, 32, 17, 52, 22, 36, 38, 44, 28, 78, 32, 64, 49, 60, 38, 104, 47, 70, 61, 78, 49, 196, 53, 88, 75, 94, 66, 162, 64, 104, 88, 134, 70, 216, 74, 120, 123, 128, 80, 214, 85, 168, 117, 144, 91, 240, 103, 162, 131, 160, 101, 392, 108, 172, 152, 178, 122, 296 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Seiichi Manyama, Table of n, a(n) for n = 2..10000

Wikipedia, Polydivisible number.

FORMULA

a(n) = A327545(n,1).

a(n) = Sum_{k=1..n-1} A327571(n,k).

EXAMPLE

n | zeroless polydivisible numbers with all digits the same in base n

--+------------------------------------------------------------------

2 | [1]

3 | [1, 11], [2, 22]

4 | [1], [2, 22, 222], [3]

So a(2) = 1, a(3) = 4, a(4) = 5.

CROSSREFS

Cf. A327545, A327571.

Sequence in context: A226486 A060648 A263828 * A092961 A327614 A177711

Adjacent sequences:  A327574 A327575 A327576 * A327578 A327579 A327580

KEYWORD

nonn,base,look

AUTHOR

Seiichi Manyama, Sep 17 2019

STATUS

approved

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Last modified February 26 09:20 EST 2020. Contains 332277 sequences. (Running on oeis4.)