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A033708 Number of simple repdigit polyhedral numbers with n digits. 1
15, 21, 21, 24, 21, 22, 24, 24, 22, 24, 21, 22, 24, 24, 22, 25, 21, 22, 24, 25, 23, 24, 21, 22, 25, 24, 22, 25, 21, 22, 24, 24, 22, 24, 21, 23, 24, 25, 23, 25, 21, 22, 24, 26, 23, 24, 21, 22, 25, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

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

CROSSREFS

Sequence in context: A043905 A072310 A166645 * A177024 A154545 A156063

Adjacent sequences:  A033705 A033706 A033707 * A033709 A033710 A033711

KEYWORD

nonn,base

AUTHOR

Mike Keith (domnei(AT)aol.com)

STATUS

approved

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Last modified June 26 23:21 EDT 2017. Contains 288777 sequences.