A099148 - OEIS

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A099148

Take a <= b such that f(a)+f(b)=concatenation of a and b, where f(k)=k(k+3)/2 (A000096). Sequence gives values of a.

2, 3, 8, 9, 14, 15, 20, 39, 77, 98, 99, 138, 158, 164, 177, 200, 399, 492, 614, 998, 999, 1065, 1383, 1505, 1598, 1797, 1859, 1920, 2000, 2655, 3077, 3213, 3762, 3999, 6707

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

For values of b, see A099149.

LINKS

Table of n, a(n) for n=1..35.

CROSSREFS

Cf. A096032, A099149.

Sequence in context: A327312 A047243 A277094 * A309423 A029787 A246396

Adjacent sequences: A099145 A099146 A099147 * A099149 A099150 A099151

KEYWORD

nonn,base

AUTHOR

John W. Layman, Sep 30 2004

EXTENSIONS

Edited by Charles R Greathouse IV, Apr 23 2010

STATUS

approved