A177361 a(n) contains the nonzero frequencies f(d) of digits d=0 .. 9 in all terms up to a(n-1) in concatenated form sorted with respect to d: f(0)//0//f(1)//1//...//f(9)//9. Initial term a(1)=2.

2, 12, 1122, 3142, 41521314, 7162233415, 91824344251617, 12110253743526271819, 1017114273845536472829, 20211172931147546774839, 3026120211314485561175859, 50321232133164125761277869, 603712821731741451061578879, 8043130219319416512620711889

Offset

1,1

Comments

For a Mathematica program, see A177360 (you have to slightly modify it) [From Jasper Mulder (jasper.mulder(AT)planet.nl), Jun 04 2010]

Links

J. Mulder, Table of n, a(n) for n = 1..25000

Example

Two; one two; one one, two twos; three ones, four twos; four ones, five twos, one three, one four; seven ones, six twos, two threes, three fours, one five; etc.

Crossrefs

Cf. A060857, A177359 - A177368

Sequence in context: A023989 A001389 A022914 * A138486 A022482 A372198

Adjacent sequences: A177358 A177359 A177360 * A177362 A177363 A177364

Keyword

easy,nonn,base

Author

Paolo P. Lava and Giorgio Balzarotti, May 10 2010

Extensions

Terms corrected using values in b-file. - N. J. A. Sloane, Oct 05 2010

Status

approved