
1, 2, 3, 5, 6, 7, 8, 10, 11, 14, 19, 20, 21, 22, 23, 24, 25, 28, 31, 32, 33, 35, 38, 39, 41, 48, 49, 52, 53, 57, 59, 65, 67, 69, 77, 81, 82, 86, 91, 94, 103, 105, 107, 114, 118, 122, 125, 131, 132, 135, 141, 142, 144, 145, 154, 157, 160, 163, 166, 171, 175, 180
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


COMMENTS

Also, length of row A181806(n) in triangles A181802 and A181803.


LINKS

David A. Corneth, Table of n, a(n) for n = 1..153
A. Flammenkamp, List of the first 1200 highly composite numbers
Eric Weisstein's World of Mathematics, Highly composite number


FORMULA

a(n) = A181801(A181806(n)).


EXAMPLE

A181806(4) = 12 has exactly five divisors (namely, 1, 2, 4, 6 and 12) that are members of A002182. Hence, a(4) = 5.


CROSSREFS

Cf. A002182, A181801, A181802, A181803, A181806.
Sequence in context: A137620 A336487 A028765 * A059870 A179813 A191914
Adjacent sequences: A181804 A181805 A181806 * A181808 A181809 A181810


KEYWORD

nonn


AUTHOR

Matthew Vandermast, Nov 27 2010


EXTENSIONS

More terms from Amiram Eldar, Aug 29 2019 (calculated from the bfile at A181806)


STATUS

approved

