A117246 Left truncatable squares, ending in 5.

225, 625, 1225, 2025, 3025, 4225, 5625, 7225, 9025, 15625, 27225, 30625, 34225, 42025, 50625, 60025, 70225, 75625, 81225, 93025, 105625, 275625, 330625, 600625, 893025, 950625, 970225, 1050625, 2030625, 3330625, 4950625, 40005625

Offset

1,1

Comments

There are no other terms with less than 30 digits. Probably this is the full list. - Giovanni Resta, Apr 27 2006

References

D. V. Ramana Rao, "Square Cuts" in '2001', pp. 96, October 1988, Times of India, Mumbai.

Links

Table of n, a(n) for n=1..32.

Example

275625 is in the sequence because repeatedly deleting the first digit leaves a succession of squares: 275625=525^2; 75625=275^2; 5625=75^2; 625=25^2; 25=5^2.

Crossrefs

Sequence in context: A219022 A193003 A287298 * A352518 A027470 A134934

Adjacent sequences: A117243 A117244 A117245 * A117247 A117248 A117249

Keyword

nonn,base

Author

Lekraj Beedassy, Apr 23 2006

Extensions

More terms from Giovanni Resta, Apr 27 2006

Status

approved