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A069600
Smallest square containing all the digits of numbers from 1 to n. For a(10) and higher, all duplicated digits must be in the term (for example a(10) has two 1's).
2
1, 121, 3721, 13924, 135424, 1236544, 13527684, 13527684, 139854276, 11738205649, 10112819764356, 1011123678945241, 10118426359171321, 10111134329645378121, 1011111632116847554329, 10111124953183456116721, 1011111119736855441726321, 101111112641746351915327881, 10111111111271587168434259369
OFFSET
1,2
EXAMPLE
a(5) = 335241 = 579^2 contains digits 1,2,3,4 and 5.
CROSSREFS
Cf. A088628.
Sequence in context: A264495 A206629 A014758 * A244065 A231649 A212802
KEYWORD
nonn,base,more
AUTHOR
Amarnath Murthy, Mar 25 2002
EXTENSIONS
Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jan 20 2003
a(14)-a(15) from Giovanni Resta, Aug 06 2019
a(16)-a(19) from Chai Wah Wu, May 18 2020
STATUS
approved