

A332312


Numbers k such that k and k + 1 have the same number of divisors in Gaussian integers.


4



62, 153, 175, 206, 278, 404, 422, 494, 657, 774, 801, 833, 854, 873, 891, 926, 1017, 1070, 1126, 1142, 1233, 1322, 1424, 1502, 1617, 1718, 1737, 1881, 1910, 1953, 2097, 2222, 2302, 2673, 2694, 2793, 2798, 2817, 2825, 2961, 2996, 3014, 3174, 3177, 3266, 3446, 3577
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OFFSET

1,1


LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000


EXAMPLE

62 is a term since both 62 and 63 have 6 divisors in Gaussian integers.


MATHEMATICA

SequencePosition[DivisorSigma[0, Range[3500], GaussianIntegers > True], {x_, x_}][[All, 1]] (* after Harvey P. Dale at A005237 *)


CROSSREFS

Cf. A005237, A062327, A332313, A332314.
Sequence in context: A044313 A044694 A238138 * A104054 A255153 A044394
Adjacent sequences: A332309 A332310 A332311 * A332313 A332314 A332315


KEYWORD

nonn


AUTHOR

Amiram Eldar, Feb 09 2020


STATUS

approved



