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A093039 Fifth in a series of similar sequences resulting from repeating Pascal sequences. 1
1, 2, 7, 11, 25, 35, 65, 85, 140, 175, 266, 322, 462, 546, 750, 870 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

FORMULA

Let b(n) = 1 1 5 5 15 15 ... then a(n) = b(n)+ b(n-1) + b(n-2), n>2

EXAMPLE

Summing columns we have

1..1..5..5..15..15....

...1..1..5...5..15....

......1..1...5...5....

1..2..7..11..25.35....

CROSSREFS

Cf. A004526, A001651, A008805, A001318, A058187, A028724.

Sequence in context: A075356 A235355 A103184 * A201630 A023862 A024479

Adjacent sequences:  A093036 A093037 A093038 * A093040 A093041 A093042

KEYWORD

nonn

AUTHOR

Alford Arnold, May 08 2004

STATUS

approved

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Last modified March 30 21:01 EDT 2020. Contains 333132 sequences. (Running on oeis4.)