login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084854 Triangular array, read by rows: T(n,k) = concatenated decimal representations of n and k, 1<=k<=n. 4
11, 21, 22, 31, 32, 33, 41, 42, 43, 44, 51, 52, 53, 54, 55, 61, 62, 63, 64, 65, 66, 71, 72, 73, 74, 75, 76, 77, 81, 82, 83, 84, 85, 86, 87, 88, 91, 92, 93, 94, 95, 96, 97, 98, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 1010, 111, 112, 113, 114, 115, 116 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

T(n,1) = A017281(n); T(n,n) = A020338(n).

LINKS

Indranil Ghosh, Rows 1..100 of triangle, flattened

FORMULA

T(n, k) = n*10^A055642(k) + k;

CROSSREFS

Cf. A084855.

Sequence in context: A096312 A031032 A279769 * A108237 A084906 A232184

Adjacent sequences:  A084851 A084852 A084853 * A084855 A084856 A084857

KEYWORD

nonn,base,tabl

AUTHOR

Reinhard Zumkeller, Jun 09 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 12 10:58 EDT 2021. Contains 344947 sequences. (Running on oeis4.)