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!)
A186274 Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) before g(j) when f(i)=g(j), where f and g are the triangular numbers and octagonal numbers.  Complement of A186159. 4
2, 5, 9, 12, 15, 19, 22, 26, 29, 33, 36, 40, 43, 46, 50, 53, 57, 60, 64, 67, 71, 74, 78, 81, 84, 88, 91, 95, 98, 102, 105, 109, 112, 115, 119, 122, 126, 129, 133, 136, 140, 143, 147, 150, 153, 157, 160, 164, 167, 171, 174, 178, 181, 184, 188, 191, 195, 198, 202, 205, 209, 212, 216, 219, 222, 226, 229, 233, 236, 240, 243, 247, 250, 253, 257, 260, 264, 267, 271, 274, 278, 281, 284, 288, 291, 295, 298, 302, 305, 309, 312, 316, 319, 322, 326, 329, 333, 336, 340, 343 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A186159.

LINKS

Table of n, a(n) for n=1..100.

EXAMPLE

First, write the triangular and octagonal numbers:

1..3..6.....10..15..21..28

1........8..........21......

Then replace each by its rank, where ties are settled by ranking the triangular number before the octagonal:

a=(1,3,4,6,7,8,10,11,13,...)=A186159.

b=(2,5,9,12,15,19,22,26,...)=A186274.

MATHEMATICA

(See A186159.)

CROSSREFS

Cf. A186159, A186219.

Sequence in context: A108165 A063957 A184579 * A184926 A342745 A189384

Adjacent sequences:  A186271 A186272 A186273 * A186275 A186276 A186277

KEYWORD

nonn

AUTHOR

Clark Kimberling, Feb 16 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 September 18 19:30 EDT 2021. Contains 347534 sequences. (Running on oeis4.)