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A066552 Sum of digits of n-th term of A066551. 0
1, 13, 9, 18, 28, 5, 26, 37, 38, 34, 61, 59, 43, 58, 44, 64, 44, 59, 67, 85, 98, 89, 109, 121, 124, 144, 47, 82, 94, 104, 135, 139, 145, 103, 95, 135, 184, 162, 143, 173, 157, 151, 198, 194, 199, 218, 148, 234, 231, 261, 257, 226, 297, 169, 192, 179, 163, 195, 216 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..59.

MATHEMATICA

With[{c=Flatten[IntegerDigits/@(Range[400]^2)]}, Table[Total[Take[c, {(n(n-1))/2+1, (n(n-1))/2+n}]], {n, 60}]] (* Harvey P. Dale, Jul 21 2012 *)

CROSSREFS

Cf. A066547, A066549, A066551.

Sequence in context: A300679 A304137 A305043 * A206609 A281085 A072270

Adjacent sequences:  A066549 A066550 A066551 * A066553 A066554 A066555

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Dec 16 2001

EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 01 2003

STATUS

approved

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Last modified January 29 04:57 EST 2020. Contains 331335 sequences. (Running on oeis4.)