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A053640 Number of divisors of highly composite odd numbers (A053624). 4
1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 20, 24, 32, 36, 40, 48, 54, 64, 72, 80, 96, 108, 120, 128, 144, 160, 192, 216, 240, 256, 288, 320, 384, 432, 480, 512, 576, 640, 720, 768, 864, 960, 1024, 1152, 1280, 1440, 1536, 1728, 1920, 2048, 2304, 2560, 2880, 3072, 3456 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Ray Chandler, Table of n, a(n) for n = 1..170

FORMULA

a(n) = A000005(A053624(n)).

CROSSREFS

Cf. A000005, A053624.

Sequence in context: A227731 A067947 A279542 * A296991 A097755 A301704

Adjacent sequences:  A053637 A053638 A053639 * A053641 A053642 A053643

KEYWORD

nonn

AUTHOR

Stefano Lanfranco (lastefano(AT)yahoo.it), Mar 22 2000

EXTENSIONS

Extended by Ray Chandler, Jan 12 2012

STATUS

approved

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Last modified August 18 13:12 EDT 2019. Contains 326100 sequences. (Running on oeis4.)