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A075026 Define a number k to occupy a divisor cavity if d(k-1) > d(k) < d(k+1) where d(k) is the number of divisors of k. Sequence gives composite numbers occupying a divisor cavity. 3
9, 25, 49, 51, 55, 65, 69, 77, 91, 111, 115, 121, 125, 129, 153, 155, 161, 169, 175, 183, 185, 187, 209, 221, 235, 237, 247, 249, 259, 265, 267, 274, 287, 289, 291, 295, 305, 309, 319, 321, 323, 329, 339, 341, 343, 351, 355, 361, 365, 369, 371, 377, 386, 391 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..53.

CROSSREFS

Cf. A075025, A075027.

Sequence in context: A031036 A051132 A247687 * A113659 A113745 A016754

Adjacent sequences:  A075023 A075024 A075025 * A075027 A075028 A075029

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Sep 02 2002

EXTENSIONS

Corrected and extended by Jason Earls (zevi_35711(AT)yahoo.com), Sep 04 2002

STATUS

approved

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Last modified December 8 14:38 EST 2016. Contains 278945 sequences.