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A072362 Composite numbers whose sum of aliquot divisors is palindromic. +0
1
4, 6, 8, 9, 10, 15, 20, 21, 25, 36, 38, 45, 49, 54, 82, 87, 150, 189, 195, 219, 230, 243, 247, 248, 291, 321, 329, 333, 336, 352, 355, 381, 384, 385, 396, 398, 402, 411, 432, 458, 465, 471, 473, 478, 486, 501, 533, 536, 538, 552, 556, 561, 574, 578, 596, 602 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(8)=21: sum of aliquot divisors of 21=1+3+7=11, which is a palindrome.

CROSSREFS

Sequence in context: A035139 A062115 A141613 this_sequence A084988 A004716 A100373

Adjacent sequences: A072359 A072360 A072361 this_sequence A072363 A072364 A072365

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Jul 18 2002

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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