A131037 Sequence A001333 with last digits set to zero.
0, 0, 0, 0, 10, 40, 90, 230, 570, 1390, 3360, 8110, 19600, 47320, 114240, 275800, 665850, 1607520, 3880890, 9369310, 22619530, 54608390, 131836320, 318281030, 768398400, 1855077840, 4478554080, 10812186000, 26102926090, 63018038200
Offset: 0
Extensions
Edited by R. J. Mathar, Jul 07 2008