A066552 Sum of digits of n-th term of A066551.

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

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: A377610 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