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!)
A186494 Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) before g(j) when f(i)=g(j), where f(i)=5i and g(j)=j-th pentagonal number.  Complement of A186493. 4
1, 3, 5, 8, 12, 16, 21, 26, 32, 39, 46, 54, 62, 71, 81, 91, 102, 113, 125, 138, 151, 165, 179, 194, 210, 226, 243, 260, 278, 297, 316, 336, 356, 377, 399, 421, 444, 467, 491, 516, 541, 567, 593, 620, 648, 676, 705, 734, 764, 795, 826, 858, 890, 923, 957, 991, 1026, 1061, 1097, 1134, 1171, 1209, 1247, 1286, 1326, 1366, 1407, 1448, 1490, 1533, 1576, 1620, 1664, 1709, 1755, 1801, 1848, 1895, 1943, 1992, 2041, 2091, 2141 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..83.

EXAMPLE

First, write

....5..10..15..20..25..30..35..40.. (5i),

1..5......12......22............35..(pentagonal numbers).

Then replace each number by its rank, where ties are settled by ranking 5i before the pentagonal number:

a=(2,4,6,7,9,10,11,13,14,15,17,...)=A186493,

b=(1,3,5,8,12,16,21,26,32,39,46,..)=A186494.

MATHEMATICA

(See A186493.)

CROSSREFS

Cf. A186350, A186493, A186495, A186496.

Sequence in context: A194207 A236538 A194176 * A194180 A000212 A183139

Adjacent sequences:  A186491 A186492 A186493 * A186495 A186496 A186497

KEYWORD

nonn

AUTHOR

Clark Kimberling, Feb 22 2011

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 August 8 23:02 EDT 2020. Contains 336300 sequences. (Running on oeis4.)