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A109689
Smallest cube that contains exactly n occurrences of the string n.
2
1, 1, 21952, 5735339, 4410944, 3553559576, 66676466375, 7707245470777, 148388768680888, 999970000299999, 310810243810243102106210518101010107767, 1115341111117511141118670443456
OFFSET
0,3
COMMENTS
10^32 < a(10) <= 101010101010100310108799210878085984030872. - Donovan Johnson, Jan 16 2013
For a(11), I assumed the occurrences could overlap. a(12) <= 1271462121212121201236561213010121209124112392. - Giovanni Resta, Feb 09 2013
EXAMPLE
a(2) = 21952 since this is the first cube that contains exactly two 2's.
PROG
(Python) # a() in A109691
print([a(n, POW=3) for n in range(10)]) # Michael S. Branicky, Dec 21 2020
CROSSREFS
Cf. A109690 (4th powers), A109691 (5th powers).
Sequence in context: A066693 A262821 A250569 * A209733 A203441 A217533
KEYWORD
base,more,nonn
AUTHOR
Erich Friedman, Aug 07 2005
EXTENSIONS
a(10) from Giovanni Resta, Jan 21 2013
a(11) from Giovanni Resta, Feb 09 2013
STATUS
approved