A098701 Number of solutions to rev(x^2) = rev(x)^2 with n digits, where the rev(x) function reverses the digits of x.

3, 6, 15, 39, 90, 209, 457, 991, 2062, 4288, 8521, 17075, 33108, 64073, 121045, 228811, 423188, 781582, 1420445, 2571855, 4599072, 8187723, 14426529, 25278777, 43966808, 75959592, 130496955, 222598065, 378036562, 637128539, 1071282807

Offset: 1

Author

Martin Renner, Oct 27 2004

Keywords

• nonn
• base

Comments

Excludes multiples of 10.

Crossrefs

Cf. A085305.

Extensions

a(7)-a(31) from David Radcliffe, May 05 2013