A134439 Numbers n with property that for each digit d from 1 to 9, we can also see the decimal expansion of d^2 as a substring of n.
2536497816, 2536498167, 2536781649, 2536816497, 2573649816, 2573681649, 2578163649, 2578164936, 2581636497, 2581649367, 2581649736, 2581673649, 3625781649, 3625816497, 3649257816, 3649258167, 3649725816, 3649781625
Offset: 1
Examples
In the first number, for 2 we can see 4, for 5 we can see 25, for 3 we can see 9, for 6 we can see 36, for 4 we can see 16, for 9 we can see 81, for 8 we can see 64, for 1 we can see 1 and for 7 we can see 49.
Links
- David Applegate, Table of n, a(n) for n = 1..300
Extensions
Corrected by David Applegate, Feb 09 2008