A115385 Numbers that are the product of the squares of their nonzero digits.

1, 914457600, 3657830400, 2662333328088524390400

Offset

1,2

Comments

a(5) <= 471982452444268043164418193461982580062141693296640000. - Jon E. Schoenfield, Feb 07 2022

Links

Table of n, a(n) for n=1..4.

Example

914457600 = 9^2 * 1^2 * 4^2 * 4^2 * 5^2 * 7^2 * 6^2.

Crossrefs

Cf. A061863.

Sequence in context: A051470 A076135 A015382 * A186805 A122532 A172605

Adjacent sequences: A115382 A115383 A115384 * A115386 A115387 A115388

Keyword

base,nonn,more

Author

Giovanni Resta, Jan 21 2006

Status

approved