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 A279426 Numbers k such that k^2 has an odd number of digits and the middle digit is 6. 3
 13, 19, 31, 103, 108, 117, 121, 125, 129, 133, 140, 147, 157, 160, 175, 178, 194, 199, 204, 209, 216, 225, 236, 238, 240, 260, 262, 264, 275, 284, 291, 296, 301, 306, 1003, 1008, 1013, 1018, 1023, 1028, 1047, 1052, 1066, 1080, 1094, 1103, 1112, 1121, 1130 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Lars Blomberg, Table of n, a(n) for n = 1..10000 EXAMPLE 13^2 = 1(6)9, 133^2 = 17(6)89, 284^2 = 80(6)56. CROSSREFS Cf. A279420-A279425, A279427-A279429. Sequence in context: A051644 A101408 A023252 * A241120 A128342 A154076 Adjacent sequences:  A279423 A279424 A279425 * A279427 A279428 A279429 KEYWORD nonn,base,easy AUTHOR Lars Blomberg, Dec 22 2016 STATUS approved

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Last modified February 16 15:17 EST 2020. Contains 331961 sequences. (Running on oeis4.)