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A225065 Numbers of the form n^2 plus the sum of squared digits of n^2. 1
2, 20, 53, 54, 81, 90, 101, 116, 127, 146, 177, 258, 287, 314, 321, 353, 407, 416, 438, 474, 580, 639, 686, 690, 797, 863, 913, 922, 981, 1045, 1079, 1219, 1235, 1259, 1418, 1493, 1496, 1552, 1637, 1783, 1866, 2011, 2058, 2063, 2158, 2298, 2333, 2422, 2529 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Note that consecutive terms are not necessarily generated by consecutive values of n.

It appears that 146 is the only term that can be generated by two values of n (7 and 9). There are no other duplicates in the first 10000 terms.

LINKS

Christian N. K. Anderson, Table of n, a(n) for n = 1..10000

EXAMPLE

For n=11: 11^2=121; 121 + 1^2 + 2^2 + 1^2 = 127.

PROG

(R) sort(unique((1:101)^2+sapply((1:101)^2, function(x) sum(as.numeric(unlist(strsplit(as.character(x), split="")))^2))))

CROSSREFS

Cf. A176995, A062028, A209303.

Sequence in context: A202602 A097652 A261838 * A059211 A139271 A133217

Adjacent sequences:  A225062 A225063 A225064 * A225066 A225067 A225068

KEYWORD

nonn,base

AUTHOR

Kevin L. Schwartz and Christian N. K. Anderson, Apr 26 2013

STATUS

approved

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Last modified October 23 03:21 EDT 2019. Contains 328335 sequences. (Running on oeis4.)