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A083448
Concatenation of first n numbers - n!. a(n) = 1234567891011... up to n - 1*2*3*4*5*6*7*8*9*10*11... up to n.
0
0, 10, 117, 1210, 12225, 122736, 1229527, 12305358, 123093909, 12342050110, 1234527974211, 123456310099512, 12345672683090413, 1234567803832830114, 123456787793437763415, 12345678889188423253516
OFFSET
1,2
FORMULA
a(n) = A007908(n) - A000142(n). - David Wasserman, Nov 09 2004
EXAMPLE
a(6) = 123456-720=122736.
CROSSREFS
Sequence in context: A089833 A308667 A251318 * A024129 A262970 A309582
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 01 2003
EXTENSIONS
More terms from David Wasserman, Nov 09 2004
STATUS
approved