login
A061478
First (leftmost) digit - second digit + third digit - fourth digit .... = 9.
3
9, 90, 108, 119, 207, 218, 229, 306, 317, 328, 339, 405, 416, 427, 438, 449, 504, 515, 526, 537, 548, 559, 603, 614, 625, 636, 647, 658, 669, 702, 713, 724, 735, 746, 757, 768, 779, 801, 812, 823, 834, 845, 856, 867, 878, 889, 900, 911, 922, 933, 944, 955
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[1000], Total[Times@@@Partition[Riffle[IntegerDigits[#], {1, -1}, {2, -1, 2}], 2]]==9&] (* Harvey P. Dale, Jul 16 2017 *)
KEYWORD
nonn,base,easy
AUTHOR
Amarnath Murthy, May 05 2001
EXTENSIONS
More terms from Robert G. Wilson v, May 10 2001 and from Larry Reeves (larryr(AT)acm.org), May 15 2001
STATUS
approved