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A199536 The first column in Clark Kimberlings even first column Stolarsky array (beginning column count at 1). 1
1, 4, 6, 10, 12, 14, 16, 20, 22, 26, 28, 30, 32, 36, 38, 40, 42, 46, 48, 52, 54, 56, 58, 62, 64, 68, 70, 72, 74, 78, 80, 82, 84, 88, 90, 94, 96, 98, 100, 104, 106, 108, 110, 114, 116, 120, 122, 124, 126, 130, 132, 136, 138, 140, 142, 146, 148, 150, 152, 156 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..60.

C. Kimberling, The first column of an interspersion, Fibonacci Quarterly 32 (1994), pp. 301-314.

FORMULA

Define Phi = (1+sqrt(5))/2, a(1) = 1. For n = 1, 2, 3, a(2n) = 2*floor(n*Phi)+2*n, a(2n+1) = 2*floor(n*Phi)+2*n+2.

EXAMPLE

The even first column stolarsky array (EFC array), northwest corner:

1......2.....3.....5.....8....13....21....34....55....89...144  ...

4......7....11....18....29....47....76...123...199...322...521

6......9....15....24....39....63...102...165...267...432...699

10....17....27....44....71...115...186...301...487...788..1275

12....19....31....50....81...131...212...343...555...898..1453

14....23....37....60....97...157...254...411...665..1076..1741

16....25....41....66...107...173...280...453...733..1186..1919

20....33....53....86...139...225...364...589...953..1542..2673

22....35....57....92...149...241...390...631..1021..1652..2673

.

.

.

CROSSREFS

Cf. A199535.

Sequence in context: A137230 A283564 A181794 * A284883 A134333 A114331

Adjacent sequences:  A199533 A199534 A199535 * A199537 A199538 A199539

KEYWORD

nonn

AUTHOR

Casey Mongoven, Nov 07 2011

STATUS

approved

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Last modified September 17 08:57 EDT 2019. Contains 327128 sequences. (Running on oeis4.)