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A262712 Numbers n such that sum of digits on n^2 is 9. 1
3, 6, 9, 12, 15, 18, 21, 30, 39, 45, 48, 51, 60, 90, 102, 105, 111, 120, 150, 180, 201, 210, 249, 300, 318, 321, 348, 351, 390, 450, 480, 501, 510, 549, 600, 900, 1002, 1005, 1011, 1020, 1050, 1101, 1110, 1149, 1200, 1500, 1761, 1800, 2001, 2010, 2100, 2490 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A008585.

LINKS

Table of n, a(n) for n=1..52.

EXAMPLE

6 is in sequence because 6^2 = 36 and 3+6 = 9.

MATHEMATICA

Select[Range[10^5], Total[IntegerDigits[#^2]] == 9 &]

PROG

(MAGMA) [n: n in [1..2*10^4] | &+Intseq(n^2) eq 9 ];

(PARI) for(n=1, 1e8, if (sumdigits(n^2) == 9, print1(n", "))) \\ Altug Alkan, Sep 28 2015

CROSSREFS

Cf. similar sequences listed in A262711.

Cf. A004159, A008585, A061910.

Sequence in context: A127451 A022844 A260702 * A195934 A195933 A110117

Adjacent sequences:  A262709 A262710 A262711 * A262713 A262714 A262715

KEYWORD

nonn,base

AUTHOR

Vincenzo Librandi, Sep 28 2015

STATUS

approved

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Last modified January 22 13:41 EST 2020. Contains 331149 sequences. (Running on oeis4.)