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A095826
Numbers k such that k + largest digit of k is a triangular number.
1
0, 3, 5, 19, 24, 28, 33, 41, 50, 58, 60, 69, 71, 83, 96, 115, 128, 133, 165, 182, 205, 268, 291, 322, 369, 371, 397, 402, 431, 488, 519, 523, 587, 624, 658, 660, 694, 734, 773, 812, 853, 894, 937, 981, 1032, 1074, 1119, 1124, 1168, 1318, 1323, 1369, 1371, 1535
OFFSET
1,2
LINKS
EXAMPLE
41 is a term because 41 + 4 = 45, a triangular number.
MATHEMATICA
nldnQ[n_]:=IntegerQ[(Sqrt[8(n+Max[IntegerDigits[n]])+1]-1)/2]; Select[ Range[0, 2000], nldnQ] (* Harvey P. Dale, May 29 2012 *)
CROSSREFS
Sequence in context: A118484 A243898 A243900 * A058778 A211439 A088785
KEYWORD
base,easy,nonn
AUTHOR
Jason Earls, Jul 10 2004
STATUS
approved