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A186321 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 squares and heptagonal numbers. Complement of A186320. 4
2, 4, 7, 9, 12, 15, 17, 20, 22, 25, 27, 30, 33, 35, 38, 40, 43, 45, 48, 51, 53, 56, 58, 61, 64, 66, 69, 71, 74, 76, 79, 82, 84, 87, 89, 92, 95, 97, 100, 102, 105, 107, 110, 113, 115, 118, 120, 123, 126, 128, 131, 133, 136, 138, 141, 144, 146, 149, 151, 154, 156, 159, 162, 164, 167, 169, 172, 175, 177, 180, 182, 185, 187, 190, 193, 195, 198, 200 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
First, write
1..4...9..16....25...36...49...64.. (squares)
1....7.......18....34........55.... (heptagonal)
Replace each number by its rank, where ties are settled by ranking the square number before the heptagonal:
a=(1,3,5,6,8,10,11,13,...)=A186320
b=(2,4,7,9,12,15,17,20,...)=A186321.
MATHEMATICA
(See A186320.)
CROSSREFS
Sequence in context: A163293 A188045 A247912 * A026356 A184735 A184583
KEYWORD
nonn
AUTHOR
Clark Kimberling, Feb 17 2011
STATUS
approved

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Last modified March 3 08:35 EST 2024. Contains 370499 sequences. (Running on oeis4.)