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A033706 Values of k associated with A033705. 3
3, 4, 5, 3, 3, 16, 38, 9, 75, 11, 149, 186, 3, 260, 297, 9, 1589, 531, 131, 1475, 514, 41139, 21604940, 65359479, 170677592, 933706818, 5378862, 806321563, 360633274, 199660579, 3220611916266, 63890006966, 975514583945, 8944083 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..34.

M. Keith, On Repdigit Polygonal Numbers, J. Integer Sequences, Vol. 1, 1998, #6.

EXAMPLE

A033705(1) = 6, and 6 is triangular (3 sides), so a(1)=3.

A033705(2) = 9, and 9 is square (4 sides), so a(2)=4.

CROSSREFS

Cf. A033705, A033707.

Sequence in context: A228947 A163874 A165565 * A121890 A178231 A137926

Adjacent sequences:  A033703 A033704 A033705 * A033707 A033708 A033709

KEYWORD

nonn

AUTHOR

Mike Keith (domnei(AT)aol.com)

STATUS

approved

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Last modified May 24 03:21 EDT 2017. Contains 286937 sequences.