A080481 Concatenation of next n numbers (a(1) = 0).

0, 12, 345, 6789, 1011121314, 151617181920, 21222324252627, 2829303132333435, 363738394041424344, 45464748495051525354, 5556575859606162636465, 666768697071727374757677, 78798081828384858687888990

Offset: 1

Author

Amarnath Murthy, Mar 11 2003

Keywords

• base
• easy
• nonn

Comments

a(n) is a multiple of 3.

Crossrefs

Cf. A080482, A080483, A080484.

Extensions

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 06 2003