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A247843 Consecutive exclusionary squares: Numbers n such that n^2 does not contain digits of n and (n+1)^2 does not contain digits of n+1. 1
2, 3, 7, 8, 17, 33, 38, 53, 57, 58, 157, 187, 237, 313, 333, 557, 558, 672, 688, 738, 787, 788, 812, 813, 853, 1557, 2087, 2107, 2112, 3112, 3113, 3157, 3333, 3357, 3358, 4453, 4553, 5598, 5857, 6672, 6688, 7017, 7287, 7772, 7888, 7908, 8087, 8337, 15787, 17157, 18557, 22112, 32358 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Derek Orr, Table of n, a(n) for n = 1..53

PROG

(Python)

for n in range(10**5):

..s, t = str(n), str(n+1)

..s2, t2 = str(n**2), str((n+1)**2)

..c = 0

..for i in s:

....if s2.count(i):

......c += 1

......break

..for j in t:

....if t2.count(j):

......c += 1

......break

..if not c:

....print(n, end=', ')

CROSSREFS

Cf. A029783.

Sequence in context: A060121 A002964 A166966 * A181658 A251541 A325105

Adjacent sequences:  A247840 A247841 A247842 * A247844 A247845 A247846

KEYWORD

nonn,base

AUTHOR

Derek Orr, Sep 25 2014

STATUS

approved

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Last modified June 23 16:47 EDT 2021. Contains 345402 sequences. (Running on oeis4.)