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A140783 Digit sum of A091137(n). 1
1, 2, 3, 6, 9, 9, 18, 18, 27, 27, 27, 27, 45, 45, 45, 63, 54, 54, 63, 72, 54, 81, 99, 90, 81, 90, 99, 99, 99, 126, 117, 135, 189, 198, 171, 180, 171, 180, 171, 180, 189, 162, 189, 207, 180, 198, 207, 243, 261, 243, 297, 270, 243, 261, 279, 288, 324, 342, 315, 315 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n)= A007953(A091137(n)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 29 2008

CROSSREFS

Sequence in context: A021426 A189968 A097108 * A094351 A061910 A007086

Adjacent sequences:  A140780 A140781 A140782 * A140784 A140785 A140786

KEYWORD

nonn,base

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Jul 13 2008

EXTENSIONS

Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 29 2008

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Last modified February 16 10:53 EST 2012. Contains 205904 sequences.