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A172260 A172240(n) + A172240(n+1) 0
10, 20, 30, 36, 48, 60, 68, 78, 84, 96, 114, 128, 138, 144, 152, 162, 172, 186, 198, 204, 212, 222, 240, 258, 268, 276, 288, 300, 308, 320, 336, 354, 372, 384, 390, 396 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

For a(n) > 10, a(n) is divisible by 6 except if A172240(n+1) - A172240(n) is equal to 6.

LINKS

Table of n, a(n) for n=1..36.

CROSSREFS

Sequence in context: A157938 A095208 A291625 * A300024 A069534 A237416

Adjacent sequences:  A172257 A172258 A172259 * A172261 A172262 A172263

KEYWORD

nonn,easy

AUTHOR

Giovanni Teofilatto, Nov 20 2010

STATUS

approved

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Last modified April 23 14:15 EDT 2019. Contains 322386 sequences. (Running on oeis4.)