A316483 Squares whose arithmetic mean of digits is 3 (i.e., the sum of digits is 3 times the number of digits).

144, 225, 324, 441, 900, 108900, 114921, 119025, 125316, 129600, 136161, 140625, 145161, 159201, 161604, 164025, 176400, 184041, 205209, 210681, 213444, 216225, 219024, 221841, 239121, 242064, 245025, 248004, 254016, 291600, 304704, 308025, 311364, 314721

Offset

1,1

Comments

Each term's number of digits is divisible by 3. (See A316480.)

Links

Jon E. Schoenfield, Table of n, a(n) for n = 1..10000

Example

12^2 = 144, a 3-digit number whose digit sum is 1+4+4 = 9 = 3*3, so 144 is a term.
360^2 = 129600, a 6-digit number whose digit sum is 1+2+9+6+0+0 = 18 = 3*6, so 129600 is a term.

Crossrefs

Cf. A069711, A316480.

Intersection of A000290 and A061386. - Michel Marcus, Jul 06 2018

Sequence in context: A276564 A061040 A159456 * A064563 A008436 A250773

Adjacent sequences: A316480 A316481 A316482 * A316484 A316485 A316486

Keyword

nonn,base

Author

Jon E. Schoenfield, Jul 04 2018

Status

approved