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A168231
a(n)^2 = digital sum of (A076503(n))^2.
0
2, 3, 2, 4, 4, 4, 4, 4, 5, 2, 4, 5, 4, 4, 5, 5, 4, 4, 4, 5, 5, 5, 5, 4, 5, 4, 5, 5, 5, 4, 4, 5, 4, 5, 5, 5, 5, 5, 4, 5, 5, 5, 5, 4, 5, 5, 5, 5, 5, 4, 4, 5, 5, 5, 5, 5, 4, 5, 5, 4, 4, 5, 5, 5, 5, 7, 5, 4, 5, 5, 5, 5, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 7, 5, 5, 7, 5, 5, 7, 5, 5, 5, 7, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5
OFFSET
1,1
COMMENTS
a(n)^2 = A007953((A076503(n))^2).
CROSSREFS
Cf. A076503 Prime numbers whose squares have square digital sums, A061910 Numbers n such that sum of digits of n^2 is a square, A007953 Digital sum (i.e. sum of digits) of n, A000040 The prime numbers.
Sequence in context: A304735 A318048 A235805 * A235728 A205546 A322348
KEYWORD
base,nonn
AUTHOR
Zak Seidov, Nov 21 2009
STATUS
approved