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A045858 Numbers n such that n^2 has initial digit '4'. 0
2, 7, 20, 21, 22, 64, 65, 66, 67, 68, 69, 70, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 633, 634, 635, 636, 637, 638, 639, 640, 641, 642, 643, 644, 645, 646, 647, 648, 649, 650, 651 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..55.

CROSSREFS

Sequence in context: A182169 A170869 A162355 * A160677 A035402 A182655

Adjacent sequences:  A045855 A045856 A045857 * A045859 A045860 A045861

KEYWORD

nonn,base

AUTHOR

Jeff Burch

STATUS

approved

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Last modified March 29 15:02 EDT 2017. Contains 284271 sequences.