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A186386
Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) after g(j) when f(i)=g(j), where f(i)=5i and g(j)=j(j+1)/2 (triangular number). Complement of A186385.
5
1, 2, 4, 5, 7, 10, 12, 15, 17, 20, 24, 27, 31, 34, 38, 43, 47, 52, 56, 61, 67, 72, 78, 83, 89, 96, 102, 109, 115, 122, 130, 137, 145, 152, 160, 169, 177, 186, 194, 203, 213, 222, 232, 241, 251, 262, 272, 283, 293, 304, 316, 327, 339, 350, 362, 375, 387, 400, 412, 425, 439, 452, 466, 479, 493, 508, 522, 537, 551, 566, 582, 597, 613, 628, 644, 661, 677, 694, 710, 727, 745, 762, 780, 797, 815, 834, 852, 871, 889, 908
OFFSET
1,2
EXAMPLE
First, write
.....5...10..15..20..25..30.. (5*i)
1..3..6..10..15....21..28.. (triangular)
Then replace each number by its rank, where ties are settled by ranking 5*i after the triangular:
a=(3,6,8,9,11,13,14,16,18,..)=A186385
b=(1,2,4,5,7,10,12,15,17,...)=A186386.
MATHEMATICA
(See A186385.)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Feb 19 2011
STATUS
approved