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A189466 Number of superior highly composite numbers < 10^n. 1
2, 4, 6, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 23, 24, 25, 25, 26, 27, 28, 28, 29, 30, 31, 32, 33, 33, 34, 34, 35, 36, 36, 37, 38, 38, 39, 39, 40, 41, 41, 42, 42, 43, 43, 44, 44, 46, 46, 46, 47, 47, 48, 49, 49, 50, 50, 51, 51, 52, 52, 53 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Number of superior highly composite numbers (A002201) with at most n digits.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000 (calculated using the b-file at A000705; terms 1..250 from Krzysztof Ostrowski)

T. D. Noe, List of superior highly composite numbers

EXAMPLE

a(2) = 4 since there are 4 superior highly composite numbers < 10^2 {2,6,12,60}

CROSSREFS

Cf. A000705, A002201, A112781.

Sequence in context: A285129 A160766 A192515 * A085492 A065090 A324560

Adjacent sequences:  A189463 A189464 A189465 * A189467 A189468 A189469

KEYWORD

nonn

AUTHOR

Krzysztof Ostrowski, Apr 22 2011

STATUS

approved

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Last modified November 22 10:59 EST 2019. Contains 329389 sequences. (Running on oeis4.)