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A054789 Earliest sequence with a(a(n))=9n. 0
0, 2, 9, 4, 27, 6, 45, 8, 63, 18, 11, 90, 13, 108, 15, 126, 17, 144, 81, 20, 171, 22, 189, 24, 207, 26, 225, 36, 29, 252, 31, 270, 33, 288, 35, 306, 243, 38, 333, 40, 351, 42, 369, 44, 387, 54, 47, 414, 49, 432, 51, 450, 53, 468, 405, 56, 495, 58, 513, 60, 531, 62, 549 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

Index entries for sequences of the a(a(n)) = 2n family

CROSSREFS

Cf. A002516, A002517, A002518, A007379, A008585.

Sequence in context: A065599 A171228 A171560 * A002508 A038215 A119019

Adjacent sequences:  A054786 A054787 A054788 * A054790 A054791 A054792

KEYWORD

nice,nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), Apr 27 2000

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Last modified February 14 20:13 EST 2012. Contains 205663 sequences.