A186355 - OEIS

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A186355

Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) before g(j) when f(i)=g(j), where f(i)=3i and g(j)=j(j+1)/2 (triangular number). Complement of A186354.

1, 3, 5, 7, 10, 13, 16, 20, 24, 28, 33, 38, 43, 49, 55, 61, 68, 75, 82, 90, 98, 106, 115, 124, 133, 143, 153, 163, 174, 185, 196, 208, 220, 232, 245, 258, 271, 285, 299, 313, 328, 343, 358, 374, 390, 406, 423, 440, 457, 475, 493, 511, 530, 549, 568, 588, 608, 628, 649, 670, 691, 713, 735, 757, 780, 803, 826, 850, 874, 898, 923, 948, 973, 999, 1025, 1051, 1078, 1105, 1132, 1160, 1188, 1216, 1245, 1274, 1303

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

OFFSET

1,2

COMMENTS

See A186554.

Does this differ (apart from the additional 1) from A089108? - R. J. Mathar, Feb 25 2011

LINKS

Table of n, a(n) for n=1..85.

EXAMPLE

First, write

...3..6..9....12..15..18..21..24.. (3*i)

1..3..6....10.....15......21.... (triangular)